CS merging 4 images matching colours

[george k]

Can anyone please help? I've got to merge 4 cmyk images of a building into one panoramic view. The tonal values in each image are different, I can get what seems like a perfect overall match on each image using curves, but when I check the magenta and black channels they're darker by approx 6%.

I've tried matching these channels separately but then the overall image doesn't match.

What frightens me is they might just pick up on the printed version.

Any advise would be much appreciated.

George K

[Phil_The_Rodent]

What about match colour?

Might work...

Then you just need to match luminocity using curves...