I document a lot of fine art for repro.
I have been using a Gretag Color Checker and a Curves layer to correct/remove colour casts.
Using the Colour Sampler tool, I take (5x5 pixel) samples of four of the grey scale patches - White, the two Middle-Grey patches, and Black. If I could take more samples, I would, but the Colour Sampler tool only allows four.
I then correct these four patches, in seperate RGB channels, until they match the values listed here>
http://www.babelcolor.com/download/RGB%20C...olorChecker.pdf(Scroll down to page 5. Bablecolor Average table)
i.e. White: 245, 245, 240. Grey(1): 159, 160, 160. Grey(2): 119, 121, 121. Black: 53, 53, 54.
Everything is done in 8 bit Adobe 1998.
The results I have been getting are excellent. I am merely wondering whether I can improve this method in any way?
e.g. Once the four patches are balanced, the values for the Red, Green and Blue patches are off, albeit only slightly. I have tried sampling these patches and correcting, but the results are never as 'clean'.
I am using a DELL PC and Eye-One corrected LCD monitor.
Thanks.
D.