I have some images to send to the printer. The printing company wants them in 'CMYK' but doesnt offer any other information. I've read up quite a bit on this but most info that I've found seems to be about the theory of color profiles with not much on the actual procedure.
Currently my image is in sRGB (I'm using the GIMP which I believe uses sRGB, but doesnt embed this color profile in the image). I understand that ISOcoated_v2_300_eci.ic is a good general-purpose CMYK profile.
1) Do I want to convert my image to the CMYK profile or do I just want to add the profile to the image?
2) How can I verify that the above has worked. E.g. if I load the image up with some viewer app and view it on the monitor, how can I tell if it is all correct? I.e. I believe once the image is in the new profile you should be able to preview to get an estimate what it will look when printed (as CMYK has a smaller range than sRGB) and maybe adjust the colors to improve things. Maybe there are some test images showing before and after conversion?
3) Can anyone recommend tools for 1 and 2 (free hopefully). I am on windows 7, but could also use Linux. (Other than Separate+ for the GIMP - I tried it but I'm pretty certain its not working correctly for me as yellow turns into yellow-green).