Actually, using the above process, maybe even the contrast and brightness settings are saved and re-used as well, I'm not sure.Īlternately, if you want to do a whole bunch of images, use the process I mentioned above, including setting your brightness and contrast if you wish, then go to the ACR browser window, select all the images you want to be corrected the same way, right click on them, and select Apply Camera RAW Settings. Then you can set your contrast and brightness to your liking in Photoshop. Color difference test is performed on a single image(current displayed image). Then you change the setting directly underneath the histogram (still in ACR) to Settings: Previous Conversion, and it'll apply the same colour temp and tint corrections to all the rest of the images you open until you change it. Macbeth Chart Image Tests include color difference test and noise measurements. The ColorChecker Classic chart is a rectangular card measuring about 11 by 8.25 inches (27.9 by 21.0 cm), or in its original incarnation about 13 by 9 inches (33 by 23 cm), an aspect ratio approximately the same as that of 35 mm film. Maybe I'm completely misunderstanding the question, but isn't it as simple as using the eye-dropper (in Photoshop RAW converter), and clicking on the square closest to middle gray? I thought that automatically corrects all the colours, though not necessarily setting a satisfactory (to your taste) black and white point.

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