So I learned about RGB/CMYK this week

when the boss and I went to the printer and discovered what we saw on the screen at the office was different than what the printer gave us. They fixed it for us and I see that to really understand this hobby of photography I have to learn the printing side as well as the photo side. That is if I want my work to look the way I think it should. I created an event invite using this photo and when we got there it was quite a bit lighter than what she wanted.
In the photos below, one is converted to CMYK and one is RGB. Can you tell the difference? There's quite a bit of difference to me, but the CMYK looks like the RGB when printed. :bounce:

and

CMYK for print. Most printers now prefer to do their own ripping to cmyk. I'm surprised that yours didn't do it automatically.

so am I. Just like your posting, I've committed to memory; CMYK for print, RGB for computer. :)

So that the color of your monitor matches the color of your printer - and you can send a picture to someone else with an ICC profiled monitor and they will see exactly what you see.

http://en.wikipedia.org/wiki/ICC_profile