[cairo] Subtractive API, part 0

[ecir hana]

On Mon, Feb 1, 2010 at 5:00 PM, Chris Murphy <lists at colorremedies.com> wrote:

> All of these things have been completely solved, short of actually simulating metallic and
> fluorescent spot colors with conventional inkjet inks. You can simulate the effect of ink
> opacity and print sequence. This is done automatically, millions of times a day, all over
> the world, with CMYK ICC profiles which take all of these things into account. Extending
> this to spot colors can be done either using deviceN ICC profiles, or proprietary solutions
> which tend to be more common.

If all of these things are solved, why is there:
- just one software which gets it right (Serendipity Blackmagic)
- need for "iterative proof-correction cycle" to get nice results
- so many rips, plugins and books dealing with color management
- a difference between a tagged scanned picture printed on two high-end printers
- various magentas? (not the paint, but the actual color on paper)