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Author Topic: New 39 Hassy digital backs  (Read 6439 times)
BernardLanguillier
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« on: January 07, 2006, 06:58:42 AM »
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Discussed here:

http://forums.robgalbraith.com/showflat.ph...3148#Post393242

The MS option appears like a great product to use when the situation is static enough, doesn'it? Like a scan back and a single shot back in one package.

Regards,
Bernard
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Ed Jack
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« Reply #1 on: January 10, 2006, 11:27:10 AM »
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Quote
Discussed here:

http://forums.robgalbraith.com/showflat.ph...3148#Post393242

The MS option appears like a great product to use when the situation is static enough, doesn'it? Like a scan back and a single shot back in one package.

Regards,
Bernard
[a href=\"index.php?act=findpost&pid=55421\"][{POST_SNAPBACK}][/a]

 True, but it has to be shot tethered to a computer rather than just an image bank I think, so a lot of the portability of single shot capture is negated.

Ed
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DiaAzul
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« Reply #2 on: January 10, 2006, 06:03:07 PM »
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The following is from the Hasselblad product description on their website:

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In a studio environment, the CF 39 line enables you to increase the color resolution of your captures by means of a unique multiple-exposure technique controlled by the optional Multi Shot Module (patent pending). The result is unique color resolution and absolutely moiré free images. The Hasselblad CF 39 can be upgraded with the 4*Res module at any time. The Hasselblad CF 39MS comes with the Multi Shot Module already built in.

A Unique Approach to Color
In the past, color management solutions have imposed limitations on professional digital photographers, because of the need to choose a specific color profile to suit a specific job in order to capture various skin tones, metals, fabrics, flowers, etc. Hasselblad has helped solve this dilemma, with the development of a new, powerful color profile to be used with its FlexColor imaging software. Working with the new Hasselblad RGB color profile enables you to produce outstanding and reliable out-of-the-box colors, with skin tones, special product gradations, and other difficult colors reproduced easily and effectively.

Is anyone able to explain what this means/does in practice and whether it could be implemented manually on a 'standard' DSLR? I understand the principles of multiple exposures to increase dynamic range, but I am not familiar with the concept of multiple exposures to increase colour resolution - or am I missing something? Any illumination on this would be much appreciated.

thanks
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David Plummer    http://photo.tanzo.org/
Ray
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« Reply #3 on: January 11, 2006, 12:59:53 AM »
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Perhaps an increase in color resolution really means an increase in color gamut? Just a suggestion. I basically don't know.
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BernardLanguillier
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« Reply #4 on: January 11, 2006, 02:45:18 AM »
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My understanding is that the back becomes a Foveon like device since it takes 4 consecutive images by moving one pixel at a time in such a way as to measure the actual RGB values for each pixel.

In other words, no de-mosaicing anymore, meaning that the result is very similar to what you get with a scanning back.

Regards,
Bernard
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DiaAzul
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« Reply #5 on: January 11, 2006, 05:24:36 AM »
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Thanks Bernard, that makes a little bit more sense. Though, I too had made the same initial assumption as Ray that perhaps they were increasing the colour gamut.

I guess they couldn't say they are increasing the image resolution because it is still 39Mpix, however, colour resolution is a bit of an ambiguous term when not explained clearly.
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David Plummer    http://photo.tanzo.org/
BernardLanguillier
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« Reply #6 on: January 11, 2006, 07:34:52 AM »
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Yep, color resolution would appear to be sort of a new way to call this, and it is pretty confusing indeed.

On the other hand what else could they have called it?

Cheers,
Bernard
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Andrew Teakle
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« Reply #7 on: January 12, 2006, 11:05:14 PM »
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For static images, I wonder if they could use a stepper motor to move the sensor 1/2 pixel to the side, then down, then back, after the first shot. Then combine the images  to effectively give a resolution of 39*4, or 156 megapixels.
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