Topic: Seitz camera (Read 15610 times)

BernardLanguillier · « **Reply #20 on:** September 19, 2006, 09:14:51 am »

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A few points, forget any kind of studio flash lighting, it's hot lights only and with the kind of lighting needed for LF style photography you are going to melt the model before you manage to finish the frame!
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HMI lights? Admitedely very expensive.

[a href=\"http://www.bhphotovideo.com/bnh/controller/home?O=NavBar&A=search&Q=&ci=2248]http://www.bhphotovideo.com/bnh/controller...arch&Q=&ci=2248[/url]

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Computers. What kind of monster would you need to process those files, just 5 layers would grind down almost every desktop available at this point in time!
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A Mac Pro WS 8 or 16 GB Ram should be more than enough. 1GB per file is only twice more than what you get with scanned 4*5 in 16 bits and I have been dealing with those on a 2 GB Win XP without major problems.

Crucial now sells Mac Pro workstation compatible at 1150 US$ for 2*2 GB. More than RAM, storage will quickly become the problem.

A 3-4 TB Raid 5 IEEE or USB2 unit seems mandatory. Sansdigital gets my vote so far.

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How does the price compare to a phase 1 P45? it doesn't seem that far from it or am I mistaken?
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It is actually a good 15% more expensive that a P45 considering the rate of the Euro vs US$. If it delivers, it is however in a different category all together.

Cheers,
Bernard

Quentin · « **Reply #21 on:** September 19, 2006, 11:44:20 am »

Digital goes nuts. I like the fact its not just another boring me too product, but something genuinly different. Imagine ther file size shot vertically then rotated. Awesome.

Quentin

Eric Myrvaagnes · « **Reply #22 on:** September 19, 2006, 01:41:09 pm »

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Digital goes nuts. I like the fact its not just another boring me too product, but something genuinly different. Imagine ther file size shot vertically then rotated. Awesome.

Quentin
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And how about stitching a big bunch of vertical shots.

Eric

eronald · « **Reply #23 on:** September 19, 2006, 07:48:52 pm »

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And how about stitching a big bunch of vertical shots.

Eric
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I think Roundshot are famous for auto-stitching vertically - in fact the second camera on the homepage does this, so we can expect a rotating monster soon - I shudder to think of the storage needed for such a supermonster. Maybe this is actually an application for which IMAX film is more appropriate

[a href=\"http://www.roundshot.ch/xml_1/internet/de/application/d438/d925/f933.cfm]http://www.roundshot.ch/xml_1/internet/de/...8/d925/f933.cfm[/url]

Edmund

Stephen Best · « **Reply #24 on:** September 19, 2006, 09:40:06 pm »

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I think Roundshot are famous for auto-stitching vertically - in fact the second camera on the homepage does this, so we can expect a rotating monster soon - I shudder to think of the storage needed for such a supermonster. Maybe this is actually an application for which IMAX film is more appropriate
[a href=\"index.php?act=findpost&pid=76997\"][{POST_SNAPBACK}][/a]

It says 470 megapixels for an 80mm lens. This would generate a 2.8GB file (48-bit RGB) but these are Bayer type pixels so two thirds of this is fudged data. RGB probably isn't the best space to edit this in, we really need Photoshop support for something with chroma-subsampling (like Kodak's YCC as implemented in PhotoCD). You've got to wonder about the market/application for such huge files/images.

Eric Myrvaagnes · « **Reply #25 on:** September 19, 2006, 09:41:16 pm »

To think that if I didn't visit the LL forums I might never have heard of Seitz or Roundshot!

I wonder how much trade-in theyll offer me for my Canon S60 P&S.

Eric

BernardLanguillier · « **Reply #26 on:** September 19, 2006, 10:08:05 pm »

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It says 470 megapixels for an 80mm lens. This would generate a 2.8GB file (48-bit RGB) but these are Bayer type pixels so two thirds of this is fudged data. [a href=\"index.php?act=findpost&pid=77007\"][{POST_SNAPBACK}][/a]

Stephen,

What makes you think that they are Bayer type?

My understanding was that they were true RGB, like all scanning devices until now.

Cheers,
Bernard

Stephen Best · « **Reply #27 on:** September 19, 2006, 10:15:23 pm »

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What makes you think that they are Bayer type?
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From the specs for the 6x17 (at the bottom):

[a href=\"http://www.roundshot.ch/xml_1/internet/de/application/d438/d925/f934.cfm]http://www.roundshot.ch/xml_1/internet/de/...8/d925/f934.cfm[/url]

"File sizes
raw (16-bit): 307 MB
uncompressed tiff (48-bit): 922 MB"

BernardLanguillier · « **Reply #28 on:** September 19, 2006, 10:32:06 pm »

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From the specs for the 6x17 (at the bottom):

http://www.roundshot.ch/xml_1/internet/de/...8/d925/f934.cfm

"File sizes
raw (16-bit): 307 MB
uncompressed tiff (48-bit): 922 MB"
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Well spotted, this is interesting indeed. I wonder how this works...

Regards,
Bernard

travis.kniffin · « **Reply #29 on:** September 20, 2006, 01:11:29 am »

Is there a reason to assume that it will capture all colors on each photosite? Could it scan using a bayer-pattern sensor? Do scanning backs necessarily use scanning methods that capture full RGB on each photosite?

mark tipple · « **Reply #30 on:** September 20, 2006, 07:13:59 am »

I'm not sure if this explains why it wouldn't be a problem, but Seitz seem to think you can handhold this thing.
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um...why are there finger holds on the body....?
surely if you're spending such serious bank on this thing you're not going to handhold it.....

Stephen Best · « **Reply #31 on:** September 20, 2006, 08:03:13 am »

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um...why are there finger holds on the body....?
surely if you're spending such serious bank on this thing you're not going to handhold it.....
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Seitz' words, not mine:

"Thanks to ergonomical hand grips the camera is perfectly stable for handheld images."

[a href=\"http://www.roundshot.ch/xml_1/internet/de/application/d438/d925/f934.cfm]http://www.roundshot.ch/xml_1/internet/de/...8/d925/f934.cfm[/url]

I wouldn't presume to tell people what they can or can't do with it.

DiaAzul · « **Reply #32 on:** September 20, 2006, 12:44:05 pm »

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Seitz' words, not mine:

"Thanks to ergonomical hand grips the camera is perfectly stable for handheld images."

http://www.roundshot.ch/xml_1/internet/de/...8/d925/f934.cfm

I wouldn't presume to tell people what they can or can't do with it.
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Looking at the picture of the guy holding the camera in portrait orientation with two hands - how do you reach the shutter button (red thing poking out of the lens)? Either you have to take one of your hands off the grip or push the shutter button with your nose.

Perhaps you need two people to operate it - one to handhold the two grips and one to meter the subject, adjust shutter, aperture and then push the shutter button. Practicalities of this thing need to be worked on.

markhout · « **Reply #33 on:** September 20, 2006, 02:31:40 pm »

Well, these guys are certainly leveraging off the name of their city, Lustdorf...

Tim Gray · « **Reply #34 on:** September 20, 2006, 02:43:36 pm »

This size is also interesting from an image stabilization point of view. I remember (can't relocate now) a gizmo that basically placed the camera in the centre of a wheel roughly the size of a bicycle wheel. A 1 or 2 degree "shake" when holding it would be minimized on the axis of the wheel.

Stephen Best · « **Reply #35 on:** September 20, 2006, 04:15:50 pm »

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Looking at the picture of the guy holding the camera in portrait orientation with two hands - how do you reach the shutter button (red thing poking out of the lens)? Either you have to take one of your hands off the grip or push the shutter button with your nose.

Perhaps you need two people to operate it - one to handhold the two grips and one to meter the subject, adjust shutter, aperture and then push the shutter button. Practicalities of this thing need to be worked on.
[a href=\"index.php?act=findpost&pid=77072\"][{POST_SNAPBACK}][/a]

Since it's a scanning back, I doubt the shutter button is used. This is just a hangover from the Technorama. I couldn't find a button anywhere on the body so I guess it's triggered by the control unit with a delay. This would also give you time to brace yourself for the shot. Provided you don't jerk it, I think their claim of being able to hand-hold it are possible. The capture of every line is very fast and any movement (of the camera) would be spread over the entire frame and probably not noticeable. It sure is an interesting beast!

paulbk · « **Reply #36 on:** September 20, 2006, 05:08:48 pm »

How does a scanning back work?

Is there a small sensor of just a few pixel columns that moves across the image with the shutter curtain? (Is there a shutter curtain?) And the sensor is read-out many times during the exposure? Or is there one gigantic sensor?

I have no clue?

p

DarkPenguin · « **Reply #37 on:** September 20, 2006, 05:11:59 pm »

It is a scanner on a camera back. Works like you're scanning a sheet of paper.

Author Topic: Seitz camera (Read 15610 times)

Stephen Best

Stephen Best

Stephen Best

Stephen Best

DarkPenguin