If you have an image that is printing heavy or dark, is there a benefit to using a DGC at the RIP rather than just lightening the file in Photoshop? It seems the same to me--am I missing something?
Is everything (images,tints, graphics etc.) printing heavy or just the one image in particular? If just the individual image, it should be adressed in PS
DGC affect everything - all tints, images etc. They are usually created for specific print conditions/papers etc. So if you are trying to fix one image that way you will be throwing everything else off...