How to open with the calibration of flat technique in 7.0

"In earlier versions, Camera Raw gave an option to set 'Blacks' = 'Brightness' = contrast ' = '0' and define a straight tone curve.  With the color space Adobe RGB value, opens with EXACTLY calibrated power of 2.2.  This gives a very flat looking for images with no "S" curve that nobody would use for beauty, but when it is used for SCIENTIFIC applications, I can raise the power 2.2th 16-bit image in Photoshop and have EXACTLY linear correspondence between the number of photons and the number of pixels.  This allows me to add photons, so divide the images to normalize, to make accurate measurements of pixel by pixel, and a lot of things we scientists like strangers to make beautiful pictures.

Camera Raw 7.0 changed the sliders, and after hours of scientific experimentation, I can't find a combination that opens the images that are technically exactly flat (gamma 2.2, of course) without deviations from the curve to the right.

I do weddings occasionally, science for the most part, and Photoshop is my go - to for both tool.  Thanks in advance for your help to advance the cause of science.

Q38 wrote:

Camera Raw 7.0 changed the sliders, and after hours of scientific experimentation, I can't find a combination that opens the images that are technically exactly flat (gamma 2.2, of course) without deviations from the curve to the right.

Is it true if you choose the PV2010 development process?  I thought that was supposed to be always the same as what it was before.

Nothing says that you MUST use PV2012 to develop your scientific images.  You can set the development process in the Camera Raw defaults or create a preset.

-Christmas

Tags: Adobe Camera Raw

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