>>4139981A few things, almost all printers these days, even the crazy 12 color fine art ones, are treated as RGB devices. Meaning that they accept RGB input data from a computer to output a print. The RGB to CYMK conversion is done internally by the printer RIP.
However, its behavior still needs to be described by an RGB icc profile so the colors turn out ok. This is a pretty involved and technical process done by measuring sheets of color patches printed out by the printer with a spectrophotometer and using the data to profile the printer. This profile only holds for that specific printer and paper combo, and has to be done all over for different paper, or even different printer of the same model. This process needs to be redone every couple of months as well.
The lab you're going to should do all this stuff for you, its why you're paying them. Your images don't need converted to CMYK or anything else, even if you're doing your own printing.
>relative, absolute, saturation, undefined?These are called rendering intents. Its basically how the software handles colors that the printer can produce. Again, your lab will handle this. If you're printing at home, relative colorimetric is the best option imo
>Theres also an option to choose between grey iso and black and white. What does this do?If you want to make b/w prints. Its best to save your files in RGB working space, and completely desaturate them, instead of using grey space. The reason for this is bc the gamma is different between spaces, and you'll want keep the gamma 2.2 between all your prints.
>>4140044I print all the time.
