I'm designing a magazine intended to be printed for publication. On InDesign, I have set the transparency/opacity as it best looks on screen. This is for textboxes and background overlays. But I've heard that this usually doesn't stay the same in print (gets usually darker).
Is it true? Is there something that should be taken care of? Is there some sort of a definitive print preview?
PS. We do not have a budget enough to do multiple print reviews.