Alexander Rabtchevich wrote: > The question is: which color space do these programs treat the input > snapshot of a chart if its exif says it is SRGB? Do they convert initial > data into RGB and make further calculations or regardless the image exif > treat its data as device RGB? > No, the scanin and colprof treats camera data exactly as "device data" without any intermediate conversions - as they is. The scanin doesn't do any "color" calculation. It just reads the target shot to record the patches device data. As for colprof - it calculates the color space of a device (camera) itself.