What is best profile to convert RGB to CMYK in photoshop?

[depps74]

When you convert a file in photoshop from RGB to CMYK what profile is best to use? Euroscale uncoated, Coated, SWOP2, GRAcol, etc..... to is it best to just leave it as an RGB file and let Onyx do the work?

 

[ColorCrest]

When you convert a file in photoshop from RGB to CMYK what profile is best to use? Euroscale uncoated, Coated, SWOP2, GRAcol, etc..... to is it best to just leave it as an RGB file and let Onyx do the work?

Why not experiment and test your options?

 

[dypinc]

Best to let Onyx do the work. Converts RGB to the output profile not some CMYK profile for offset press inks.

 

[Pauly]

Let onyx do it.
Your printers CMYK profile is probably bigger than GRACoL or SWOPv2. so converting to one of those, then through onyx, you'll lose colour gamut quickly.

Unless you want to work in those colour spaces

 

[funprint]

always best to let the rip convert as it will convert to the output profile as set up

 

[MHester]

I agree on lettng the RIP software do the conversion. I have Flexi as my RIP, and always let it do the RGB to CMYK conversion instead of photoshop. Doing so seems to give me brighter colors when the item prints, mainly because my RIP software knows how to convert it correctly to my 6 color printer. CMYK + LM + LC.

 

[Pauly]

I agree on lettng the RIP software do the conversion. I have Flexi as my RIP, and always let it do the RGB to CMYK conversion instead of photoshop. Doing so seems to give me brighter colors when the item prints, mainly because my RIP software knows how to convert it correctly to my 6 color printer. CMYK + LM + LC.

an FYI, that's technically a 4 colour printer. Light cyan and magenta aren't extra colours. As all they do is replace cyan/magenta at lower ink coverages so the prints are less grainy in highlights.
Additional colours would be +orange, green, violet. etc.