Sony A99 (and RX1) raw file issue? An investigative report...

Started Dec 27, 2012 | Discussions thread
Allan Olesen
Senior MemberPosts: 2,606
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Re: Nothing new discovered here
In reply to tesilab, Dec 30, 2013

tesilab wrote:

The output still covers only a 12 bit space. Any 14-bit goodness to the cameras must be entirely internal and not available as output.

You mean the output after applying the curve, right?

Are you saying that the lowest non-zero value (and the value increment in the low end of the range) is approx. 1/4000 of the highest value, instead of approx. 1/16000 as should be expected for a 14 bit file?

This description would fit the output from my a77 as seen in RawDigger. Lowest values are 0, 4, 8 etc., and highest value is somewhere around 16k. So that is only a 12 bit range which has for some reason had all the values multiplied by 4. But this camera is only marketed as 12 bit, so that is OK.

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