Speaking of art clean up tricks, (not that anyone was), but how about poor quality jpgs for CMYK?
I occasioanlly get art from customers who "got this art" from some customer...who wants it separated. Sometimes it's sim process and some times it's to be cmyk.
When you convert a rgb (low rez jpg), the compression can be horrible and once converted, can leave BLOCKS of compression or color break downs. Why or how it does te break dwon method, I do'ntknow, but the end result is that some of the colors (mostly yellow) will have those BLOCKS in it.
I ran across someone who thought they had a method to handle this but it didn't work. So, outside of doing a gaussion blurr, does anyone know of any technique to improve on this?
Once it's a turd, it only stays a turd from my experience.