Below is a screen capture after ’ Create and apply … ’ a “Calibrated Color Profile”.
How should I understand what I see?
Do the color differences that I can see represent the color calibration?
What is your experience with creating dcp profiles?
Are such differences normal, or rather exceptional?
Could you show some of your own calibrations screens?
Would you know some paper discussing the accuracy of ColorChecker calibrations?
Any suggestion?
Thanks
Michel
PS
I made sure to apply no adjustement at all, except for exposure and vigneting.
Creating profiles with PhotoLab is fairly straightforward. The tricky part is to start pulling the rectangle from the brown corner of an X-Rite colour checker. I have no Datacolor checker, I can therefore not say where to start from.
Differences are normal and can be fairly obvious. They depend on many things like the WB or picture style that was used to capture the photo(s) as well as the light or mix of lights etc. In order to make image colours independent of these dependencies, we use the standardised colours of a checker and some software to elaborate the necessary factors that make the captured colours look as close to the standard colours as possible. Manufacturers take a lot of care to make the colours as precise as possible, but some errors will remain and/or be created through the full chain of steps from capture to printing. I suppose that the target accuracy is to match the colours in such way, as for human vision to be almost indistinguishable, which means that accuracy ranges in the low percent values rather than in low parts per million.
All calibration effort is vain, unless you calibrate each and every item in all the steps from capture to print…and this includes viewing conditions for the screen and print too.
I get a checker a few years ago and was keen on calibrating whatever came across my mind, but i now rather follow my own judgement and prefer colours I like to correct ones - and that is okay for me because I’m not up to my neck in reproductions.
