Photographers for greetings card work enjoy the natural color correction for RGB originals. That adds to what you have in Photoshop and makes color changes so much simpler.
The prediction in CMYK assure you of perfect reproduction in all selective areas.
CoCo Multi Channel
CoCo Multi Channel is the ideal plug-in for interactively correcting special color separations. Send one or two original files to firstname.lastname@example.org
to enjoy a live session on Skype before trying a demonstration version.
If you are not regularly producing special color separations, or you only create extras as spot colors, you will enjoy pulling colors out of an original using CoCo Multi Channel. Again, that can be to add to cmyk, or all instead of c, m, y, or k.
ICISS is not just for conventional print. Where a “digital” printer is not satisfied with the style of color conversion, from RGB (and especially from cmyk) to multi color, ICISS is used to put what you want in each inkjet color channel and drive those channels individually. That is, not through a compromised color space conversion.
That goes for all inkjet and other digital devices, such as Indigo, using specials.
Pinks, Light Cyans, golds, silvers, and multi colors are produced beatifully with ICISS and CoCo.
Photopraphers and artsist themselves, as well as printers enjoy using ICISS and CoCo.