Does painless RGB to CMYK conversion exist?

摘要

I recently told a friend I was writing an article about painless RGB to CMYK conversion. "A whole article?" he frowned. "Can't you cover that in one sentence?" Now, my friend is a designer with years of prepress experience, so I was somewhat taken aback by his question. Nonetheless, I thought I knew what he meant. "Is 'Use Photoshop to change the color mode from RGB to CMYK' the sentence you had in mind?" I asked. "Well, yes," he said. "I mean, that's pretty easy." The key word here is "painless." For our purposes, let's define painless RGB to CMYK conversion as "changing the color space of an image in a way that honors the original creator's intent (within the limits of the printing process) and doing so in as automated a fashion as possible.