80mp - how much detail do you want? Leaf AFi-ii 12 plus 90mm apo macro

[EricWHiss]

I know I have promised a few some comparison images between the AFi-ii 12, CFii-39MS, Canon 5d2 and P20 and I'll get to that very soon.  For now here's a shot I took today hand held with the Rollei 90mm apo macro at f/13 and 1/250 using a twin metz macro flash unit with the 356 module.

First I'll attach the full frame image and then a couple 100% crops.  I processed this out in LC 11.5 using basically the defaults for sharpening and noise but added +5 on the saturation and brought in the dark and light points with the curves tool.

Make sure to expand the 100% crops all the way.  These jpgs got sharpened on output from LC 11.5 and then again on output from LR3 (screen sharpening set to low) and you could argue its too much but anyhow wow!

[Chairman Bill]

Wow. Impressive stuff. Makes my D700 & 60mm Nikkor micro's results pale into insignificance

[Graham Mitchell]

nice!

[donaldt]

have to say its impressive

[dergiman]

this is insane!

[Christoph C. Feldhaim]

I want more detail !!! 

[yaya]

I want more detail !!! 

Open up to f8 just careful as it may cut your eyes

[nazdravanul]

Open up to f8 just careful as it may cut your eyes

So the 5.2u pixel size on your 80MP sensor places the diffraction limit at f8 and lower ? Is the per pixel degrading that obvious between f8 and f11 ?

[Christoph C. Feldhaim]

So the 5.2u pixel size on your 80MP sensor places the diffraction limit at f8 and lower ? Is the per pixel degrading that obvious between f8 and f11 ?

The size of the first ring of the diffraction ('Airy') disc is about 1.35 times the f-stop (for green light). People tend to say having 4 sensels capturing an Airy disc is still good.
So - that would result in an allowed f-stop of   (5.2*2)/1.35 = 7.7 - voilá !

[Josh-H]

Wow.. that is indeed pretty impressive stuff.

[yaya]

So the 5.2u pixel size on your 80MP sensor places the diffraction limit at f8 and lower ? Is the per pixel degrading that obvious between f8 and f11 ?

All I meant was that the 90mm Macro is sharper at f8 than at f13 but as you can see in Eric's images at f13 it's not so bad...

[Christoph C. Feldhaim]

All I meant was that the 90mm Macro is sharper at f8 than at f13 but as you can see in Eric's images at f13 it's not so bad...

Actually I get a feeling of craving seeing this - I believe drug addicts feel this at times ...

[Guy Mancuso]

I tested the IQ 180 several times already and seriously these new 80 mpx sensors have a wow factor when it comes to detail. When shooting there is no way in the world your eye is getting what these sensors are picking up, not even a remote chance of it. It's actually kind of frightening. Certainly a lot of horsepower and more than many of us need for sure but when you see it than you want it. I just upgraded but I am more concerned about back speed so I chickened out for a IQ 160 besides the delta jump is not easy for sure. Even 60 mpx is a lot and maybe more than my commercial needs are but I wanted FF this time over the cropped P40 but for those jumping into 80 there is a difference in detail for sure among other things. As more folks are getting there new 80 mpx sensors you will certainly hear more about the detail jump. It's there alright

Nice shots BTW

[henrikfoto]

I tested the IQ 180 several times already and seriously these new 80 mpx sensors have a wow factor when it comes to detail. When shooting there is no way in the world your eye is getting what these sensors are picking up, not even a remote chance of it. It's actually kind of frightening. Certainly a lot of horsepower and more than many of us need for sure but when you see it than you want it. I just upgraded but I am more concerned about back speed so I chickened out for a IQ 160 besides the delta jump is not easy for sure. Even 60 mpx is a lot and maybe more than my commercial needs are but I wanted FF this time over the cropped P40 but for those jumping into 80 there is a difference in detail for sure among other things. As more folks are getting there new 80 mpx sensors you will certainly hear more about the detail jump. It's there alright

Nice shots BTW


Have you or anybody else tested the files from IQ180 against the Leaf 12?

Henrik

[pipzz]

I want more detail !!! 

me too! me too!

[EricWHiss]

The size of the first ring of the diffraction ('Airy') disc is about 1.35 times the f-stop (for green light). People tend to say having 4 sensels capturing an Airy disc is still good.
So - that would result in an allowed f-stop of   (5.2*2)/1.35 = 7.7 - voilá !

Thanks, that's a really quick and useful calculation method.   I did test through the range of apertures to see how diffraction would impact stopping down since getting the most DOF (without stacking)  is sometimes important to me.  You can indeed start to see diffraction creep in beyond f/8 but its not making a big impact on sharpness until about f/13.     I shot those side by side with the CFii-39MS so maybe I'll post those in a separate comparison thread.

[bradleygibson]

Not bad for detail, but I can't quite see the individual molecular bonds holding the flower together--perhaps a little more detail would be in order.    Looking forward to see the side-by-sides--how much does ~40% more resolution (40MP -> 80MP) make an impact?  It will be great to see.

Thanks for taking the time to do this, Eric.

Since the PSF for diffraction is known (Airy disc), does anyone know if the damage can be undone (or partially undone) with R-L deconvolution?

[nazdravanul]

All I meant was that the 90mm Macro is sharper at f8 than at f13 but as you can see in Eric's images at f13 it's not so bad...

Got it, thank you . I can certainly relate to the craving comment of the previous poster )

[Guy Mancuso]

Not bad for detail, but I can't quite see the individual molecular bonds holding the flower together--perhaps a little more detail would be in order.    Looking forward to see the side-by-sides--how much does ~40% more resolution (40MP -> 80MP) make an impact?  It will be great to see.

Thanks for taking the time to do this, Eric.

Since the PSF for diffraction is known (Airy disc), does anyone know if the damage can be undone (or partially undone) with R-L deconvolution?

Get a freaking microscope. ROTFLMAO

Just kidding

Seriously Bradley as much as i love my P40+. Its a fairly good margin difference between the 40 and 80. You realize it kills me to say that too and cost me a boat load of money realizing that but settled on the 60 but if speed of back and money (wife) where not the issue I would get the 80. LOL
Besides the detail and can't speak for the Aptus 12 but I would assume like the IQ 180 the tonal range and smoothness of the files is certainly different to the good not to mention the extra DR that really is there. I'm adding black to this 180 images I have shot just to look more normal. So this new sensor has some mojo going on. Does one need this much horsepower ? That is up to the buyer but it certainly has a wow factor.

[Bart_van_der_Wolf]

Since the PSF for diffraction is known (Airy disc), does anyone know if the damage can be undone (or partially undone) with R-L deconvolution?

Hi Bradley,

That should be no problem for R-L deconvolution. With these mild amounts of diffraction, even a Gaussian PSF will work quite well. However, one should be careful to not 'enhance' aliasing at the same time (the risk depends on subject matter and good focus).

Cheers,
Bart