scottlameany wrote:Lets say you have a 600 DPI image-lineart provided, and want to color at 300 dpi to keep your sanity and computer in one piece.
If you're stuck working on an old computer, scale a *copy* of the page down if you must work that way. I'd go down to 300 only if absolutely necessary, because you can sometimes see pixels on really sharp edges at that resolution. 450 DPI would be much preferred. When finished with the color, scale the colored image back up to 600 and replace the garbled line art in the scaled up version with the original 600DPI aliased art. Only add any color-holds etc once you have the high res art to work from. Some people just clor at 450 DPI. It really is a high enough res. for print.
Third: I see much mention of coloring greyscale. I imagine this involves laying solid colors on another layer, but how are they composited? Is there a heavy value restriction on the colors you can choose to coloize grayscaled art?
Coloring greyscale art usually involves line art that is scanned from pencils or has ink washes. It's best put on a layer set to "multiply", on top of the colored background layer. I recommend coloring "greyscale" stuff in RGB to avoid ink limit problems and ugly colors containing too much black ink when it goes to print.