Originally Posted by dawghair
I always do it in cmyk, I have never tried it in RGB.
Like you I learned in CMYK and I think in those numbers. I'm not at all fluent with the numbers in RGB: couldn't give you off the top of my head a formula for blood red, Kelly Green, gold or good skin tones, whatever the ethnic derivation. But by treating the RGB channels like CMY, I get good results. Sometimes I'll dupe to CMYK to steal the black plate as a layer mask for a luminosity curve, which does a nice job with shadows. Where I work, we deliver a large portion of our images in RGB format now, so I've had to get up to speed, but it's still a process of translation.