My Samsung ST65 camera actually has a contrast control, and I have now realized that the proper setting for it is not zero. The default setting enhances contrast in the shadows and compresses the highlights. A -2 setting for contrast balanced by a +2 setting for saturation improves the appearance of the gray scale on a picture of the Color Checker 24 card. This might not be the final word - I will look at -1, +1 as well; but I have no desire to do post processing on photographs from this camera.
I have been trying to calibrate a Wolverine Data F2D14 film to digital converter. I now find that the color curves for this product are customized in a woefully unfaithful style. There is a big deficit of green in the lower midtones, and a huge deficit of red there. And there is a general surplus of blue from near black to near white. It is barely within the capabilities of the RawTherapee software to compensate for this using custom color curves.
My Canon EOS Digital Rebel, the 2004 model, works very well with the UFRaw software for post processing. The free software color matrix borrowed from the work of David Coffin makes pleasing color even compared to the ICC calibrations from Canon. But there is no natural calibration for the exposure setting and white balance. For a Color Checker 24 photographed against a dark background, the exposure setting in UFRaw should be -1.36, the temperature setting should be 5660, and the green balance
Michael J. Burns