ShanksLeRoux asked this question on the artcone forums: Gotta say hi to lombi first
I’m gonna be active again around here. Haven’t been here for a loooong time, but the site still looks AWESOME lombi!^_^
So…some friends and i are organizing this party and i gotta create the poster. It’s supposed to look simple and more-or-less with bright colours… I made this and they all like it.

So yea… all looks ok n stuff.. but my friends forgot to mention the requirements i needed to get this image to the printer. Wich are… *points to title* the CMYK-colourmode and 300 DPI Resolution.
Right.. so when i started with the poster, i just used the standard settings.
Resolution: 300 pixels/inch and Mode: RGB-color.
The printer does not accept any RGB files as they may mess up the true colors. Please also note that the image is sized on an A2-format (420mm width, 594mm height). So yea… it’s kinda large… colors might get messed up a little at this size …
My main question is: Can i change the resolution AND the mode to CMYK-colourmode and 300 DPI Resolution without starting all over again?
Also.. might be important! I’m working with Photoshop 7.0 oldskool lol ^_^
thanks in advance, grtz
shanks
Lombi
July 31st, 2010 at 8:29 pm
Yes, changing the color mode should not affect your artwork in any way. You can do two things:
- change original file
- save original, make duplicate, flatten and convert the duplicate
You can convert the color space by going to image/mode/cmyk
Saving to TIF will usually do the trick.
The reason they require such a file is because the printer has a VERY poor RIP or they dont have one at all.
ShanksLeRoux
July 31st, 2010 at 8:29 pm
Done, thanks a bunch mate
ready for printing, 500 pieces o.o”