![]() the wider the test pattern gamut is, the better the result is, e.g.shoot a test pattern in ideal conditions matching the planned use (outside, studio.flash instead of daylight, D55 instead of de D50. nevertheless, we can without any problem, use them as long as we stay approximatively in the same environment, e.g.they are theoretically matching: a given illuminant (D50, C, shadow.), test pattern shooting conditions, lens shooting.they try to reduce the gap between their original values (the sensor ones) and a target value, theoretically perfect.They modify Lab values but not rgb ones - histograms remain the same, or like internal profiles as does RawTherapee (theoretically without rendering intent) ![]()
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