Luminous Landscape Forum

Equipment & Techniques => Mirrorless Cameras => Topic started by: Guillermo Luijk on July 02, 2015, 05:09:14 pm

Title: Is the Sony A7R II the first "universal body"?
Post by: Guillermo Luijk on July 02, 2015, 05:09:14 pm
The latest article from Dpreview, including videos showing the A7R II AF-C capabilities using Canon EF lenses that are impressive:

Analysis: Sony a7R II and RX100 IV autofocus systems (http://www.dpreview.com/articles/1652088044/sony-an-eye-on-focus)

Interesting comments about the potential superiority of on-sensor PDAF over classical PDAF found on DLSR cameras.

(http://www.guillermoluijk.com/misc/pdaf_points.gif)


And the videos showing AF-C with Canon mount glass:

Sony a7R II: Continuous AF with Canon EF mount Sigma 50mm F1.4 Art (http://www.youtube.com/watch?v=qp8k0Tpo0y4)

Sony a7R II - Eye AF (AF-C) with Canon 24-70 f/4 (http://www.youtube.com/watch?v=8wYuelBt_pk)


Regards
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Guillermo Luijk on July 02, 2015, 05:38:28 pm
Corrected  ;). This usually happens with this forum's engine...
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: uaiomex on July 02, 2015, 07:14:04 pm
I read the articles and watched the videos like  two hours ago.
I've been thinking that if Canon don't have their new sensor technology and ready to dump their old fabs, they will certainly begin to jeopardize their entire client emporium if they don't adopt Sony sensors soon.
Canon is quickly becoming a 70's Detroit-like car manufacturer: Spitting cars with powerful V8's that sold but completely ignoring that the world was changing. It was not easy to see but the change was very real.
Now this time, the change is faster.
Eduardo
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: rdonson on July 02, 2015, 09:36:54 pm
Yes, Sony is bringing some amazing sensor technology to the battle for the heart$ of photographers.  They are very serious about sensors.  If they achieve a bit more maturity in their bodies and a broader lens lineup there will be a lot of DSLR gear on the used market in the next year.   
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: uaiomex on July 02, 2015, 11:06:48 pm
Without noticing in my prior post I completely went without answering Guillermo's question. I think I am too excited about this camera and the recent announcement by Sony to invest that much money for new sensor developments and production.
Large format cameras were in a sense universal as you could practically mount any brand of LF lens available and then some more. The A7RII is the first integrated digital camera to acomplish this stunt without leaving behind all the automation and speed that exist.
The A7RII is easily the best recipient ever invented in photography history to efficiently accomodate all technological advancements known to the public. Imho
With this exception: http://www.kodaksefke.nl/kodak-original-1888.html
Eduardo
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: ErikKaffehr on July 03, 2015, 01:05:48 am
Hi,

Seems interesting, but I am not sure how much is hype and how much is reality. I have that camera on order and once I have it and have used it a couple of weeks I will have a more clear opinion.

As far as I understand, Sony has released the specifications for the E-mount (what that now means) as smart move as there are few native lenses. The short flange distance allows for many interesting solutions.

Best regards
Erik
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: eronald on July 03, 2015, 06:10:46 am
I read the articles and watched the videos like  two hours ago.
I've been thinking that if Canon don't have their new sensor technology and ready to dump their old fabs, they will certainly begin to jeopardize their entire client emporium if they don't adopt Sony sensors soon.
Canon is quickly becoming a 70's Detroit-like car manufacturer: Spitting cars with powerful V8's that sold but completely ignoring that the world was changing. It was not easy to see but the change was very real.
Now this time, the change is faster.
Eduardo

Sony went into the phone sensor business, and this is where they get their R&D money from. And of course, soon it will be car sensors etc. The cameras are more of a byproduct of their sensor component operation than a driving force, so in a way Canon is faced with competition with a bottomless R&D budget, and in fact we can see how Sony has upped the competition in 3 years.

As you point out, this looks very much like Detroit vs. Japan Inc. with Canon stuck in the role of Detroit.

On the other hand, a lot of tourists in Paris sport huge useless dSLRs which seem a requisite fashion accessory, just like flashy fashion sneakers.

Edmund
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: rdonson on July 03, 2015, 10:23:28 am
On the other hand, a lot of tourists in Paris sport huge useless dSLRs which seem a requisite fashion accessory, just like flashy fashion sneakers.

Edmund

Change rarely happens quickly.  When it does I suspect many of the tourists of Paris will sell their DSLRs.  Many, many people have been convinced that DSLRs offer the best IQ and are a sign of how serious you are as a photographer.  Like you say, in some regards they are a fashion statement not only in Paris but in much of the U.S. and Canada.  To their credit, the tourists are likely to be getting better photos than they would with their smartphones.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Paulo Bizarro on July 03, 2015, 10:27:49 am
Sony went into the phone sensor business, and this is where they get their R&D money from. And of course, soon it will be car sensors etc. The cameras are more of a byproduct of their sensor component operation than a driving force, so in a way Canon is faced with competition with a bottomless R&D budget, and in fact we can see how Sony has upped the competition in 3 years.

As you point out, this looks very much like Detroit vs. Japan Inc. with Canon stuck in the role of Detroit.

On the other hand, a lot of tourists in Paris sport huge useless dSLRs which seem a requisite fashion accessory, just like flashy fashion sneakers.

Edmund

I have moved on from Canon EOS to Sony A7 system, for lighter weight, and smaller travelling system, without compromising on quality. I think your last paragraph is way off mark though... Regardless of what the "specialists" and "tech gearheads" prophesize, DSLRs provide some of the best bang-for-the-buck for the "average" photographer that wants to carry more than a smartphone. Heck, for 300-400 Eur, I can go to the shop and buy a DSLR plus two zoom kit...

And they are anything but useless... fashion accessories, really?

As for the AF on the new Sony using EF lenses, well, let's wait for the performance when tracking moving targets (not someone seating at a table...), or when light levels go low...
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: MatthewCromer on July 03, 2015, 10:47:32 am
We also need a good Nikon AF adapter that works with the new electronic aperture lenses...
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Herbc on July 03, 2015, 11:41:51 am
I saw on the biz news where Sony had raised some $B to use in expanding their sensor work.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Telecaster on July 03, 2015, 05:05:51 pm
And they are anything but useless... fashion accessories, really?

IMO fashion accessories in this context refers to how & why objects are displayed & used, not how capable (or not) they are. Functionality, if relevant at all, is secondary to the statement made via being seen with the thing.

Also, "a lot of tourists in Paris" doesn't equal all tourists. Just all American tourists.  :D

-Dave-
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: uaiomex on July 03, 2015, 05:45:12 pm
I live in both Tulum and Merida, México. Two very popular places for tourists from all over the world. I've noticed in the last years, an increased amount of tourist (college?) girls carrying Nikon or Canon apsc dslr's. They are mainly american (much shorter holidays). But they can be from Europe or South America too.

They seemed to take their cameras seriously. At least in the way they carry them.
I'd say they seem to try look nerdy rather than fashionable. But then again, nerdy is fashionable now.  :D

Eduardo
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: DaveCurtis on July 03, 2015, 06:26:48 pm
As a long term Canon digital user I too are considering the A7R2.  Being able to AF reasonably well with Canon lenses is a real bonus and also use my Zeiss ZE lenses with in body IBIS.

The only thing that is potentially holding me back is that I really like viewing the world through a big pro optical viewfinder. EVFs are very functional but I just don't enjoy the experience.

Perhaps I just need to use both and slowly wean myself away from the DSLR.

 

 
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: peterottaway on July 03, 2015, 09:49:57 pm
Personally I had a rather dreadful time when attempting to use both optical and electronic view finder cameras at the same time. OK the newest EVF are an improvement but can still be a bother to long term OVF users.

I stuck with using the EVF cameras only and things gradually got easier. It was a case of wanting all the advantages of a god EVF, then I had to accept some difficulties as well.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Guillermo Luijk on July 04, 2015, 04:22:59 am
Personally I had a rather dreadful time when attempting to use both optical and electronic view finder cameras at the same time. OK the newest EVF are an improvement but can still be a bother to long term OVF users.

I stuck with using the EVF cameras only and things gradually got easier. It was a case of wanting all the advantages of a god EVF, then I had to accept some difficulties as well.

As a fan of EVFs from the very beginning (I enjoyed and suffered the Olympus VF-2), yours is the kind of experience that makes me think EVFs are the one and only possible future. I explain why: even if long term OVF users like you, finally manage to get used and enjoy the advantages of EVFs over OVFs, who could imagine that the next generation of photographers (who are today instagramming the world with their smartphones) will prefer a little glass window which doesn't even show them how the picture they're taking will look like before shooting, over the bright and huge EVFs coming?.

Regards
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: BernardLanguillier on July 04, 2015, 10:43:32 am
As a fan of EVFs from the very beginning (I enjoyed and suffered the Olympus VF-2), yours is the kind of experience that makes me think EVFs are the one and only possible future. I explain why: even if long term OVF users like you, finally manage to get used and enjoy the advantages of EVFs over OVFs, who could imagine that the next generation of photographers (who are today instagramming the world with their smartphones) will prefer a little glass window which doesn't even show them how the picture they're taking will look like before shooting, over the bright and huge EVFs coming?.

I am not denying that EVF have some advantages, but to me the ability to anticipate how the A/S/ISO parameters will turn a 3D live scene into a static 2D photograph, and the resulting look thereof, is pretty much the most important photographic skill.

I am not sure that enabling our finders to preview more of that is going to result in better photographs because what matters is the ability to scan a scene and identify photographic opportunities in the scene. Removing the need to perform this mental exercise when taking the picture may result in the creation of photographers unable to see photographically.

Cheers,
Bernard
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: AlterEgo on July 04, 2015, 10:50:05 am
The only thing that is potentially holding me back is that I really like viewing the world through a big pro optical viewfinder.

are you not able to view it with your own nakes eyes with a primitive light robbing optical device (OVF in dSLRs ??? a joke even in the best cameras from pre digital era) ? why do not need to distort your view & imagination with OVF  :D
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 04, 2015, 11:31:32 am
are you not able to view it with your own nakes eyes with a primitive light robbing optical device (OVF in dSLRs ??? a joke even in the best cameras from pre digital era) ? why do not need to distort your view & imagination with OVF  :D

Maybe the OVF provides a fast high resolution preview without lag, and with the correct DOF preview as determined by the aperture (and not crippled by the limited number of pixels of the EVF)?

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: AlterEgo on July 04, 2015, 12:05:15 pm
with the correct DOF preview as determined by the aperture
correct DOF preview for say f1.4 ? and with which focusing screen exactly may I ask ?
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Brent Daniels on July 04, 2015, 12:10:33 pm
Yes the constant brightness with depth of field previewing, or being able to see the effect of expose compensation in the viewfinder is nice. However one thing I had never heard mentioned about the Sony EVF (maybe all EVF) is the amount of moire. For me it is very distracting at times. Maybe one gets used to it but it is quite surprising that I had never seen a comment about it when researching the camera.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: AlterEgo on July 04, 2015, 01:21:14 pm
For me it is very distracting at times.
worrying about BF/FF when using bright primes wide open & PDAF or mirror slap/shutter shock in a certain range of exposure times are much more distracting things for some people...
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: telyt on July 04, 2015, 02:55:53 pm
correct DOF preview for say f1.4 ? and with which focusing screen exactly may I ask ?

Nikon F or F2 with E screen.  Certainly not an AF SLR, film or digital.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: telyt on July 04, 2015, 02:59:16 pm
I am not denying that EVF have some advantages, but to me the ability to anticipate how the A/S/ISO parameters will turn a 3D live scene into a static 2D photograph, and the resulting look thereof, is pretty much the most important photographic skill.

I am not sure that enabling our finders to preview more of that is going to result in better photographs because what matters is the ability to scan a scene and identify photographic opportunities in the scene. Removing the need to perform this mental exercise when taking the picture may result in the creation of photographers enable to see photographically.

I welcome the opportunity to see in real-time where feather detail in white plumage will be clipped.  I do not often have the luxury of re-taking a photograph.

(http://www.wildlightphoto.com/birds/ardeidae/bubulcus/caegre04.jpg)
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 04, 2015, 04:08:14 pm
correct DOF preview for say f1.4 ? and with which focusing screen exactly may I ask ?

I use the Canon Ec-S Super Precision Matte focus screen. Optimized for wide-aperture lenses, specifically those that have a maximum aperture wider than f/2.8. DOF at f/1.2 or f/1.4 is virtually non-existent, but it does help to focus because the OOF zone is more obviously defocused. On a regular screen everything wider than f2.8 looks the same as at f/2.8. I do not experience any darker center when using apertures wider than f1.8, like with my 85mm f/1.2 L II. I even use the S screen for narrower aperture lenses, I do not swap it back to the regular screen, even though the focus screen looks a bit darker, it still helps to get the focus right. And did I mention without any time lag ...

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: eronald on July 04, 2015, 08:35:55 pm
I welcome the opportunity to see in real-time where feather detail in white plumage will be clipped.  I do not often have the luxury of re-taking a photograph.

(http://www.wildlightphoto.com/birds/ardeidae/bubulcus/caegre04.jpg)


poor thing looks so indignant
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: AlterEgo on July 04, 2015, 09:30:22 pm
I use the Canon Ec-S Super Precision Matte focus screen. Optimized for wide-aperture lenses, specifically those that have a maximum aperture wider than f/2.8.
let us see... what the manufacturer says = http://learn.usa.canon.com/app/pdfs/quickguides/CDLC_FocusingScreens_QuickGuide.pdf

"...A Super Precision Matte screen such as the Ec-S is optimized for wide-aperture lenses, specifically those that have a maximum aperture of f/1.8 – f/2.8. ..""

so even they are not willing to bet on 1.4  :D ...  but of course one can always say that beyond the spec of his own focusing screen the DOF magically disappears, no ?

and oh, if somebody (still not being able to focus @ 1.4, not even saying about 50/1.2 or 85/1.2 @ 1.2 though viewfinder) decide by any chance to go long telephoto then oops = "...Note, however, that with lenses that have a maximum aperture smaller than f/2.8, a Super Precision Matte screen will appear dark and grainy..." , that certainly calls for a 2nd body to avoid spoiling the experience.

the truth is very simple - there are no focusing screens designed to nail focus at 1.4 and faster through OVF in dSLR, that's it.

Title: Re: Is the Sony A7R II the first "universal body"?
Post by: AlterEgo on July 04, 2015, 09:37:55 pm
Nikon F or F2 with E screen.  Certainly not an AF SLR, film or digital.
so where are the official spec from Nikon for this screen ?
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: telyt on July 04, 2015, 11:59:11 pm
so where are the official spec from Nikon for this screen ?

It's not only the viewscreen.  The Nikon F and F2, unlike AF SLR cameras, have a fully-silvered mirror instead of semi-silvered so the viewscreen does not need to compensate for the dim image.  Furthermore, the bean counters apparently have instructed the AF cameras' engineers that since the camera's users will be using AF, designing the cameras so that the viewscreen image plane can be easily adjusted to coincide with the sensor image plane is an unwarranted expense.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: pegelli on July 05, 2015, 05:36:47 am
Maybe the OVF provides a fast high resolution preview without lag, and with the correct DOF preview as determined by the aperture?
I think OVF have certain advantages, but accurate DOF preview is not one of them in my mind.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 05, 2015, 06:16:47 am
I think OVF have certain advantages, but accurate DOF preview is not one of them in my mind.

Hi Pieter,

There should be no difference in DOF or focus in an OVF setup, compared to the optical lens projection on the sensor, both are optical images. The OVF may require the use of a better focus screen for wide aperture lenses, otherwise everything at f/2.8 and wider will look the same.

But I'm open minded about it, both approaches have their benefits and drawbacks. For me, the low resolution and associated DOF and focus rendering inaccuracy of EVFs, and the time lag, are drawbacks. Things like focus peaking (if implemented well(!)) and amplified brightness in dimly illuminated conditions are benefits. So over time, when EVF resolution increases (a lot), and ASIC chips + firmware get the preview image processed faster, without draining the battery capacity too much, then they will make OVFs unnecessary, and even be a better solution.

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: pegelli on July 05, 2015, 06:54:16 am
Bart, I agree EVF's are not ideal either but especially for smaller apertures the OVF becomes so dark that you can hardly see anything, neither composition nor dof.

Also focussing "wide open" for instance with a 2.8 lens my OVF (Sony A850) seems to give much more DOF then the final result, even when shooting at f 4.0.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 05, 2015, 07:24:29 am
Bart, I agree EVF's are not ideal either but especially for smaller apertures the OVF becomes so dark that you can hardly see anything, neither composition nor dof.

Also focussing "wide open" for instance with a 2.8 lens my OVF (Sony A850) seems to give much more DOF then the final result, even when shooting at f 4.0

I assume that the focus screen of the A850 is designed for brightness rather than for focus/DOF accuracy. That's why high-end DSLRs offer the option of interchangeable screens (the A850 has optional Type M screen (super spherical acute matte for fast lenses) to replace the generic G screen). BTW, it's surprising that e.g. the new 5DS has a fixed focus screen (maybe a signal that a 1 series body can be expected...).

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: kers on July 05, 2015, 07:43:53 am
As I understand EVF still has some delay showing the scene making it less usefull for ( fast) moving subjects...
In some ways liveview with a Loup makes a DSLR have an EVF and an OVF... it is a bit clumsy, but it works.
( i have mine connected with magnets)
an evf next to the OVF would be a better solution.

What i notice is that it is the first time Sony brings out a camera with more pixels than Nikon- If we consider that the sensor technology is Sony's that could mean their contract has finished or is altered.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 05, 2015, 08:21:29 am
let us see... what the manufacturer says = http://learn.usa.canon.com/app/pdfs/quickguides/CDLC_FocusingScreens_QuickGuide.pdf

"...A Super Precision Matte screen such as the Ec-S is optimized for wide-aperture lenses, specifically those that have a maximum aperture of f/1.8 – f/2.8. ..""

so even they are not willing to bet on 1.4  :D ...  but of course one can always say that beyond the spec of his own focusing screen the DOF magically disappears, no ?

Being argumentative for the sake of being argumentative?

You're mistakingly reading something into the info that Canon provides. The OOF part from apertures wider than f/1.8 is accurate (although the screen is not optimized for that, it does work), it's just that the center spot may become a bit darker (important to know for spot exposure measurement), but I do not notice it visually(*). That's why they say it's optimized for f/1.8 to f2.8 (there are few lenses that are wider than f/1.8, so that makes less sense to concentrate on).  At f/1.2 it's not really important how the DOF preview looks, even though it's accurate but partially a tiny bit darker, because the creative choice is made for an ultra thin DOF zone, not for how the OOF zone transition looks (bokeh is great anyway).

*) I do notice a slight edge darkening and non-circular OOF specular highlights due to the raised mirror becoming a 'visible' obstruction in the extreme aperture angle of view at f/1.2 .

Quote
the truth is very simple - there are no focusing screens designed to nail focus at 1.4 and faster through OVF in dSLR, that's it.

Maybe you should actually try it before dismissing it. I have, and do know what I'm talking about from experience. A dedicated focus screen does help a lot in getting better manual focus, and helps to more accurately preview the transition of the focus to out-of-focus zones, and thus make an informed choice of shooting aperture. It is very exact in previewing how prominent, or not, the fore/background features will distract from the main subject that's in focus.

At smaller apertures the screen will indeed look darker than the generic screen, but I have very few lenses that are in that category. I do not mind the darker than generic screen, as it's still accurate. With long telelenses, getting focus is more important than focus-screen darkening, and one can always exchange the focus screens if that is preferred.

With an EVF I have to zoom in to the pixel level to compensate for the lack of LCD resolution, but then I'd lose the overview of the full image.

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: chez on July 05, 2015, 09:00:30 am

With an EVF I have to zoom in to the pixel level to compensate for the lack of LCD resolution, but then I'd lose the overview of the full image.

Cheers,
Bart

And that's one of the EVF advantages...you can zoom in to ensure the eye lashes are precisely focused at 1.4. Not so much with an OVF.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: pegelli on July 05, 2015, 09:25:14 am
I assume that the focus screen of the A850 is designed for brightness rather than for focus/DOF accuracy. That's why high-end DSLRs offer the option of interchangeable screens (the A850 has optional Type M screen (super spherical acute matte for fast lenses) to replace the generic G screen).
Thanks Bart, and I was aware of these M screens. I tried them once with a borrowed A900 which had it, but then found the viewfinder for dark scenes is getting too dark for me and less ideal for for instance stage photography.
Like all things, incl. EVF vs. OVF, vs. different screens etc. it's always a compromise. The "ideal" camera still has to be invented (for me at least).
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: dchew on July 05, 2015, 09:41:10 am
I am not sure that enabling our finders to preview more of that is going to result in better photographs because what matters is the ability to scan a scene and identify photographic opportunities in the scene. Removing the need to perform this mental exercise when taking the picture may result in the creation of photographers unable to see photographically.

Cheers,
Bernard


I don't know Bernard. I bet there were many similar forum posts when the first SLR's started coming into vogue in the middle of the last century. "Oh my, seeing only the image in the finished frame will be the end to seeing photographically." - Anonymous forum poster, 1946

 ;)

Dave
Title: Viewfinder Wars, Episode 7: lag and DOF preview
Post by: BJL on July 05, 2015, 09:50:40 am
Maybe the OVF provides a fast high resolution preview without lag ...
That might for now still be an advantage, but as sensor read-out and EVF refresh rates get up to 120fps and beyond, I expect the EVF lag to become negligible within a technology generation or two.
... and with the correct DOF preview as determined by the aperture (and not crippled by the limited number of pixels of the EVF)?
Again probably true for now, with the XGA (1024 x 768 x 3 colors) EVFs of the latest models, but note that the secondary OVF image scattered off a frosted glass/plastic screen is limited in resolution to the equivalent of under 2 MP, so again, EVFs are getting close to matching that. [Edit: and so when you can use even modest 2x magnification, EVFs clearly win for detail over any SLR OVF.]  And as others have said, OVF DOF preview is often impossible at small apertures due to dimness, and is overestimated at larger apertures (f/2 and under?) again due to the way that secondary image is produced.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 05, 2015, 09:50:59 am
And that's one of the EVF advantages...you can zoom in to ensure the eye lashes are precisely focused at 1.4. Not so much with an OVF.

Nah, that's what Live View is for, or better yet a (lightning fast) micro-adjusted Phase Detect Focus system which doesn't take the full view away, so one can properly compose and focus, and even follow/predict motion if the subject moves. I recommend trying it if your shooting style/subject could benefit from it. There are of course many shooting scenarios, and even more photographers, where the result is not that critical. But for professional results, one best uses the proper tools (which can differ by subject), sometimes EVF, sometimes OVF (with additional Life View).

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 05, 2015, 10:25:37 am
Thanks Bart, and I was aware of these M screens. I tried them once with a borrowed A900 which had it, but then found the viewfinder for dark scenes is getting too dark for me and less ideal for for instance stage photography.
Like all things, incl. EVF vs. OVF, vs. different screens etc. it's always a compromise.

Absolutely.

Quote
The "ideal" camera still has to be invented (for me at least).

It's always a good thing to strive for perfection. Aim low and you'll shoot low, therefore I try to aim higher than that. Perfection may turn out to be a little too expensive, but we can assume that EVFs will improve on speed and resolution, they're just not there yet.

BTW, my main camera (1Ds3) has an custom function to trigger the shutter some 20% faster (at 40-44 ms) than regular (55 ms) shutter-lag after fully pressing the release button, but it may run into stabilization issues if a narrow aperture is set that needs more time to fully close and settle, so when closing it down 3 stops of more, then it's delayed again.

So when EVFs allow a 55 ms shutter-lag, combined with fast refresh times and high resolution, we'll have to find something else to bitch about.  ;)

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: ErikKaffehr on July 05, 2015, 10:25:53 am
Hi,

I am honestly interested in your experience with focusing on todays cameras. I do know that you are a great expert in manual focusing, have you found something that works for you with today's digital cameras?

Best regards
Erik

It's not only the viewscreen.  The Nikon F and F2, unlike AF SLR cameras, have a fully-silvered mirror instead of semi-silvered so the viewscreen does not need to compensate for the dim image.  Furthermore, the bean counters apparently have instructed the AF cameras' engineers that since the camera's users will be using AF, designing the cameras so that the viewscreen image plane can be easily adjusted to coincide with the sensor image plane is an unwarranted expense.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: LKaven on July 05, 2015, 10:30:49 am
What i notice is that it is the first time Sony brings out a camera with more pixels than Nikon- If we consider that the sensor technology is Sony's that could mean their contract has finished or is altered.

One might expect a 54MP Sony sensor to appear first in a Nikon update.  With lossless raw format. :-)  I'm guessing that Nikon will want to beat the Canon 5Ds at this game, and a 42MP sensor will not do that.

I am also guessing that 42MP was a design choice that took into consideration the bandwidth requirements of live-view streaming into the EVF. 
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: chez on July 05, 2015, 10:40:08 am
Nah, that's what Live View is for, or better yet a (lightning fast) micro-adjusted Phase Detect Focus system which doesn't take the full view away, so one can properly compose and focus, and even follow/predict motion if the subject moves. I recommend trying it if your shooting style/subject could benefit from it. There are of course many shooting scenarios, and even more photographers, where the result is not that critical. But for professional results, one best uses the proper tools (which can differ by subject), sometimes EVF, sometimes OVF (with additional Life View).

Cheers,
Bart

Yes, but to use Liveview you need to take away your eye from the viewfinder and look at your composition holding the camera away from your body. You call this better than just looking through the viewfinder and zooming in for fine focus.

I think you are just stretching things to point towards OVF. In reality, it has become a pleasure to manually focus my A7R using the EVF. I tried a different screens in my 5d2 with not much luck in manually focusing. It is truly night and day using the A7R.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 05, 2015, 11:22:11 am
Yes, but to use Liveview you need to take away your eye from the viewfinder and look at your composition holding the camera away from your body. You call this better than just looking through the viewfinder and zooming in for fine focus.

No, I call the Phase detect focusing better, because it allows to remain a full overview over the composition, without the need to zoom in.

Quote
I think you are just stretching things to point towards OVF.

I think you suffer from selective reading. I can see the benefits and drawbacks of both approaches, and neither one is the bees knee.

Quote
In reality, it has become a pleasure to manually focus my A7R using the EVF. I tried a different screens in my 5d2 with not much luck in manually focusing. It is truly night and day using the A7R.

I'm happy for you.

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: AlterEgo on July 05, 2015, 11:59:56 am
It's not only the viewscreen.

so they are not spec'd for focusing @ f1.4 for example, thank you.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: AlterEgo on July 05, 2015, 12:03:26 pm
but especially for smaller apertures the OVF becomes so dark that you can hardly see anything, neither composition nor dof.
and even more when you put inside a coarser screen which is designed so to work with fast primes
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: AlterEgo on July 05, 2015, 12:09:55 pm
the OOF part from apertures wider than f/1.8 is accurate...(although the screen is not optimized for that, it does work)...

right, the broken watch shows the correct time twice a day and manufacturer itself does not want to take credit for what is reliably accurate in their own materials... what an honestly on their part !  now I believe in 2nd coming too

(there are few lenses that are wider than f/1.8, so that makes less sense to concentrate on).

surely it makes no sense to concentrate on what your equipment is not spec'd for  ;) , it seems that not only DOF magically disappears there, but lenses too ...





Title: Re: Viewfinder Wars, Episode 7: lag and DOF preview
Post by: AlterEgo on July 05, 2015, 12:12:08 pm
but note that the secondary OVF image scattered off a frosted glass/plastic screen is limited in resolution to the equivalent of under 2 MP
and again -> more so when you have a coarser focusing screen designed for brighter lenses focusing
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 05, 2015, 12:19:48 pm
right, the broken watch shows the correct time twice a day and manufacturer itself does not want to take credit for what is reliably accurate in their own materials... what an honestly on their part !  now I believe in 2nd coming too

surely it makes no sense to concentrate on what your equipment is not spec'd for  ;) , it seems that not only DOF magically disappears there, but lenses too ...

Thanks. That response made it completely clear that you are only trolling, so for me there's no need to waste time on your 'contribution' for further replies/explanations. I hope others have found the exchange of information useful.

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: ErikKaffehr on July 05, 2015, 12:23:39 pm
Hi,

Newer generations of mirrorless camera have phase detection on sensor, so they can combine phase detection with contrast sensing.

I don't know if on sensor PD is as good as the traditional AF. There is a lot of hype.

Best regards
Erik

No, I call the Phase detect focusing better, because it allows to remain a full overview over the composition, without the need to zoom in.

I think you suffer from selective reading. I can see the benefits and drawbacks of both approaches, and neither one is the bees knee.

I'm happy for you.

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 05, 2015, 12:37:03 pm
Newer generations of mirrorless camera have phase detection on sensor, so they can combine phase detection with contrast sensing.

Hi Erik,

Yes, that's an encouraging development as well, just like image stabilization will help with obtaining better focus, although its effectiveness and effect on local image sensel density probably also does depend on the actual implementation. PDAF photosites that can still sample image color are preferred.

Quote
I don't know if on sensor PD is as good as the traditional AF. There is a lot of hype.

It's a recent development in consumer cameras, but time will tell. CMOS devices and faster processing open up a treasure trove of possibilities.

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: eronald on July 05, 2015, 02:15:05 pm
I think we can answer "Yes" to the question - Is the Sony A7R II the first "universal body"?

This is a landmark design just like the Nikon F or the Rolleiflex - not the first of the type, but the first where all the features - hi rez, easy third party lens use, alien lens focus, hi rez video internal recording, hi iso, in body stabilisation all come together.

Edmund
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Bart_van_der_Wolf on July 05, 2015, 02:28:55 pm
I think we can answer "Yes" to the question - Is the Sony A7R II the first "universal body"?

It indeed looks like it, although we'll probably have to wait till August before actual users can gain some experience.

Cheers,
Bart
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: telyt on July 05, 2015, 02:40:19 pm
I don't know if on sensor PD is as good as the traditional AF. There is a lot of hype.

"as good" meaning …?

If speed is the goodness you want, further development of PDAF in mirrorless cameras will erase any differences sooner or later.  If accuracy is the goodness you want, let's just say that with mirrorless you can dump the AF micro adjustment kludge in the trash where it belongs.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: eronald on July 05, 2015, 03:40:25 pm
"as good" meaning …?

If speed is the goodness you want, further development of PDAF in mirrorless cameras will erase any differences sooner or later.  If accuracy is the goodness you want, let's just say that with mirrorless you can dump the AF micro adjustment kludge in the trash where it belongs.

My Panasonic GH4 does focus from "depth of defocus" and it works very well.

Edmund
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Telecaster on July 05, 2015, 05:20:17 pm
I suspect VF preferences largely boil down to what we started off with. I learned pic-taking with a Leica M2 & 50mm lens, so a small-ish frame combined with being able to see a bit outside it was "normal." I thought SLR viewing/framing was weird when I first experienced it. I missed being able to see beyond the frame border. These days I prefer EVFs but I can get by with anything that gives me a frame along with a broad idea of what's inside it. For me high detail is very useful for manual focusing but otherwise not necessary. I'm quite near-sighted and sometimes remove my glasses when using AF cameras to simplify my viewing.

Every AF SLR I've ever owned has driven me to distraction with its PDAF focusing inconsistencies & inaccuracies. The CDAF systems in current EVF cameras are IMO worlds better. If I want an uncluttered view I can just turn off all the info displays. I don't need swift AF tracking as I rarely use continuous focusing modes. But this is me. Let's not make the error of assuming our personal preferences are universal mandates.

-Dave-
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: jrp on July 05, 2015, 06:17:59 pm
I am also guessing that 42MP was a design choice that took into consideration the bandwidth requirements of live-view streaming into the EVF. 
I seem to recall reading that 42mpx was chosen because it is easier to generate 4k video without additional interpolation.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: LKaven on July 05, 2015, 07:21:55 pm
I seem to recall reading that 42mpx was chosen because it is easier to generate 4k video without additional interpolation.

From the press release:

"The impressive video credentials of Sony’s new α7R II camera include the ability to record movies in 4K quality (QFHD 3840x2160) in either Super 35mm crop mode or full-frame mode.

In Super 35mm mode, the camera collects a wealth of information from approximately 1.8x as many pixels as 4K by using full pixel readout without pixel binning and oversamples the information to produce 4K movies with minimal moire and ‘jaggies’."
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: telyt on July 05, 2015, 07:34:51 pm
Hi,

I am honestly interested in your experience with focusing on todays cameras. I do know that you are a great expert in manual focusing, have you found something that works for you with today's digital cameras?

I've been using the Leica R8 with plain matte view screen and DMR digital back, so no I haven't found something among today's digital cameras that works for me.  The latest I tried was a D800.


I suspect VF preferences largely boil down to what we started off with.

That may be so in my case.  I started with the Nikon F and later used the Leicaflex SL, both outstanding manual-focus cameras.

Quote
Every AF SLR I've ever owned has driven me to distraction with its PDAF focusing inconsistencies & inaccuracies. The CDAF systems in current EVF cameras are IMO worlds better. If I want an uncluttered view I can just turn off all the info displays. I don't need swift AF tracking as I rarely use continuous focusing modes. But this is me. Let's not make the error of assuming our personal preferences are universal mandates.

+1
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: dchew on July 06, 2015, 07:03:14 am
I don't think anyone knows yet. But certainly many of us (me included) are hoping for that. Given the reported sensor design I think we can say it won't be worse. A lot of the analysis in regards to the a7r was around the cover glass, which was thicker than the M cameras. I have not heard any discussions about the glass thickness of the a7rII sensor, just that the design has shallower wells. That may mean color cast and vignetting will be better but not necessarily corner sharpness. I don't know...

Dave
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: ErikKaffehr on July 06, 2015, 07:22:08 am
Hi,

Highly unlikely that the thickness of the cover glass is changed, it is around 2 mm on most modern cameras with 4/3 (4mm) and Leica (0.5 mm) being the exception.

Making the cover glass thinner is not beneficial for Sony. Their lenses are intended for that thickness of cover glass. There is a company replacing the cover glass on Sony with a thinner variant. That still works with Sony/DSLR lenses.

Backside Illumination (BSI) may help with crosstalk.

The reason that Leica lenses have issue with 2 mm cover glass is the beam angle. Modern lenses have moderate beam angles as they are intended for digital sensors.

Best regards
Erik

I don't think anyone knows yet. But certainly many of us (me included) are hoping for that. Given the reported sensor design I think we can say it won't be worse. A lot of the analysis in regards to the a7r was around the cover glass, which was thicker than the M cameras. I have not heard any discussions about the glass thickness of the a7rII sensor, just that the design has shallower wells. That may mean color cast and vignetting will be better but not necessarily corner sharpness. I don't know...

Dave
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: eronald on July 06, 2015, 10:01:31 am
From the press release:

"The impressive video credentials of Sony’s new α7R II camera include the ability to record movies in 4K quality (QFHD 3840x2160) in either Super 35mm crop mode or full-frame mode.

In Super 35mm mode, the camera collects a wealth of information from approximately 1.8x as many pixels as 4K by using full pixel readout without pixel binning and oversamples the information to produce 4K movies with minimal moire and ‘jaggies’."

Yes, yes, postfacto explanatory material. The tech equivalent of "we shot the prisoner because he was attempting to escape".
I'd prefer it if just once they said "there were these parameters that were easiest to do, and so we tried them first, stumbled around a bit, came under deadline pressure, and the settings we kept are those that happened to work well enough".

Edmund
Title: High ISO performance
Post by: Guillermo Luijk on July 07, 2015, 03:11:12 pm
A RAW file at ISO6400 has appeared:
https://www.wetransfer.com/downloads/12468551e4995d4f8e062908d3735f7920150707055639/e6a691


(http://www.guillermoluijk.com/misc/furgoneta.jpg)

100% crop:
(http://www.guillermoluijk.com/misc/furgoneta_crop.jpg)


The capture seems to be about 1 stop underexposed, so it can be considered a ISO12800 RAW file in terms of SNR.

Regards
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: pegelli on July 07, 2015, 03:40:41 pm
Thanks for posting Guillermo.

Which raw converter did you use and was there any denoise dialed into this conversion you show here?
I tried importing in Lightroom (6.1) as well as converting to dng with version 9.1 from Adobe but neither of them worked.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Guillermo Luijk on July 07, 2015, 03:51:53 pm
I used DCRAW. Unlike most commercial RAW developers DCRAW applies no noise reduction, that is why it produces apparently noisier images than commercial software. The noise displayed is the AHD interpretated from the source noise found in the RAW samples.

Regards
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: NancyP on July 07, 2015, 04:31:15 pm
I am still anxiously awaiting a comprehensive review of this sensor and body....
There is no "universal" anything.
In theory, this sounds like a fine camera for current Canon users (shooting non-"action"subjects) and for collectors of old and new manual focus lenses to consider. I resemble that group of users, so I am very interested, but biding my time until the reviews come out. Is the A7R shutter shock really gone? Could IBIS effectively handle 1:2 magnification with a 125mm macro lens? (dream on) Or 135mm at "portrait" distances? And then, after the reviews, does the camera/adapter/lens feel comfortable to my hands?
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: ErikKaffehr on July 07, 2015, 04:40:13 pm
Hi,

I have one order so I hope I get it in August in time for a trip to France and another to the Dolomites. I am glad to share any experience.

Feel in the hands should be similar to the A7II.

Best regards
Erik
I am still anxiously awaiting a comprehensive review of this sensor and body....
There is no "universal" anything.
In theory, this sounds like a fine camera for current Canon users (shooting non-"action"subjects) and for collectors of old and new manual focus lenses to consider. I resemble that group of users, so I am very interested, but biding my time until the reviews come out. Is the A7R shutter shock really gone? Could IBIS effectively handle 1:2 magnification with a 125mm macro lens? (dream on) Or 135mm at "portrait" distances? And then, after the reviews, does the camera/adapter/lens feel comfortable to my hands?
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: MatthewCromer on July 07, 2015, 04:52:12 pm
I am still anxiously awaiting a comprehensive review of this sensor and body....
There is no "universal" anything.
In theory, this sounds like a fine camera for current Canon users (shooting non-"action"subjects) and for collectors of old and new manual focus lenses to consider. I resemble that group of users, so I am very interested, but biding my time until the reviews come out. Is the A7R shutter shock really gone? Could IBIS effectively handle 1:2 magnification with a 125mm macro lens? (dream on) Or 135mm at "portrait" distances? And then, after the reviews, does the camera/adapter/lens feel comfortable to my hands?

First, the shutter itself is said to be much better dampened so even in fully-mechanical shutter mode, there should be a big improvement.

Second, there is EFCS which the A7R does not have, which by itself removes 95% of shutter shock by removing the first curtain shutter movement before exposure begins. This also reduces shutter lag drastically (making it faster than any dSLR using its OVF).

Lastly, there is a fully-electronic mode which does not use the mechanical shutter AT ALL.

So, yes, I'd say the shutter shock is taken care of :)

Your other questions will depend on the user, subject, distance to subject and individual standards. You'll probably have to try it out yourself to find out those answers.
Title: Re: High ISO performance
Post by: BernardLanguillier on July 07, 2015, 06:42:31 pm
A RAW file at ISO6400 has appeared:

The capture seems to be about 1 stop underexposed, so it can be considered a ISO12800 RAW file in terms of SNR.

Thanks Guillermo.

This performance seems very impressive when taking into account the resolution.

Cheers,
Bernard
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: barryfitzgerald on July 20, 2015, 09:56:05 pm
I would wait for more detailed reviews phase detect off the sensor can be a bit ropey in lower light levels. No doubt the camera has some appeal though (when the price comes down)

I keep wondering why Sony are making E mount lenses though it would seem a fairly unwise investment they are not priced well some are not as fast as they should be, the ones that are faster are horrible price wise and the flash system lags behind A mount let along other makers.

Until Sony really nail it down I'd be cautious. IBIS is useful I can see some Canon users going for the body I would be doubtful if many invest in the system
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: AlterEgo on July 21, 2015, 09:31:03 am
and the flash system lags behind A mount

how does flash system lags behind "A mount" exactly ?

I for example using both old minolta shoe TTL flashes and new Sony style shoe TTL flashes together and they work, including optical remote TTL between what is mounted on camera and remote flashes ? granted you need an adapter to mount old flashes on camera with a new mount... but otherwise what is lagging ?

as for other systems - C&N do enjoy broader support based on their historical marketshare, so no wonder you have more 3rd parties supporting their TTL systems, that's not because A-mount or E-mount bodies - that's because Sony share not yet as big as C&N...
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: barryfitzgerald on July 21, 2015, 06:22:44 pm
how does flash system lags behind "A mount" exactly ?

I for example using both old minolta shoe TTL flashes and new Sony style shoe TTL flashes together and they work, including optical remote TTL between what is mounted on camera and remote flashes ? granted you need an adapter to mount old flashes on camera with a new mount... but otherwise what is lagging ?

as for other systems - C&N do enjoy broader support based on their historical marketshare, so no wonder you have more 3rd parties supporting their TTL systems, that's not because A-mount or E-mount bodies - that's because Sony share not yet as big as C&N...

In a word "built in flash" or lack of and the ones that do have it can't control off camera flashes. I am quite surprised that makers have not built radio flash control into the bodies but I suspect they want to make more money with add on items.

The other problem is balance a dedicated decent power flash is unbalanced with the E mount bodies even gripped it's not ideal though some might get used to it.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: peterottaway on July 21, 2015, 09:17:12 pm
The only A mount Sony with built in flash I have is the A77 ( can't remember using it), although perhaps a couple of early 1990 film cameras may have had flash. With the cameras on hand  neither the Minolta film 7or Sony A850  have built in flash. Neither did the Olympus OM-2, various Contax or Nikon film cameras.

And who takes a compact camera to get some family snaps these days ?

I do own a modest flash system of 2 F58 flash guns and a couple of RX 2 flash heads for the occasional specialist shot but that's it.My needs are not your needs as the last wedding I had a hand in shooting was my sisters - my niece will be 25 in November and my nephew will be 23 in March next year.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: barryfitzgerald on July 21, 2015, 09:35:34 pm
The only A mount Sony with built in flash I have is the A77 ( can't remember using it), although perhaps a couple of early 1990 film cameras may have had flash. With the cameras on hand  neither the Minolta film 7or Sony A850  have built in flash. Neither did the Olympus OM-2, various Contax or Nikon film cameras.

And who takes a compact camera to get some family snaps these days ?

I do own a modest flash system of 2 F58 flash guns and a couple of RX 2 flash heads for the occasional specialist shot but that's it.My needs are not your needs as the last wedding I had a hand in shooting was my sisters - my niece will be 25 in November and my nephew will be 23 in March next year.

The Minolta 9 and 7's have a built in flash I own 2 7's myself both are capable of wireless flash and ratio flash controlled directly by the on-board unit, in fact Sony complicated the flash a bit by fragmenting the system entry bodies were unable to do ratio flash or use a dedicated flash as a controller even if the gun supported it.

Minolta were way ahead of everyone at that time HSS, wireless flash and ratio flash, Sony did not take the ball and run with it, Nikon did though (but not on entry bodies) and to a degree Canon. It doesn't bother me much I have flashes that can act as controllers, but it is useful IMO to have a built in flash.
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Guillermo Luijk on August 05, 2015, 08:31:42 am
Hey Canon!

Day Two with the Sony A7RII..so far. WOW! | STEVE HUFF PHOTOS (http://www.stevehuffphoto.com/2015/08/04/day-two-with-the-sony-a7rii-so-far-wow/)

"Here is a shot with the Canon 50 1.2 EF lens at 1.2. What is really incredible? Myself and all here agree, this lens focuses faster on the A7RII than it does on the Canon 5D series. Faster and more accurate."

Regards
Title: Re: Is the Sony A7R II the first "universal body"?
Post by: Otto Phocus on August 05, 2015, 09:17:58 am
The reason I am interested in EVFs is that there is only so much you can do with and OVF and we are just starting to develop capabilities of EVF.  I can't imagine what the future will hold for EVFs.  I am pretty sure they will only get better and more capable.