I am an engineering student aiming to characterize a flux distribution on a plane by correlating pixel values with flux sensor measurements in the plane. However, I am not very knowledgeable with photography, so I’d just like to clarify some things about processing RAW files.
My understanding is that DLSR sensors have a basically linear response to light intensity (I am using a Canon EOS 60D), but if I shoot in JPG, the camera will apply a nonlinear gamma adjustment to the image. Therefore, I should shoot in RAW, convert to grayscale/monochrome, and then export as a .tif, which I can use in MATLAB for the rest of my post-processing. In the conversion process, I want to ensure that linearity is maintained.
In darktable, there is three color profile options: input profile, working profile, and output color profile. If I select the input color profile as standard color matrix, and then my output color profile as any of the default linear color profiles (linear Rec709, linear Rec2020, etc.), linearity will be maintained, correct?
White balance is irrelevant. Whether I apply any white balance or not, linearity is maintained in the grayscale image (as long as I don’t clip any of the channels) correct?