Martin Weberg wrote:
profile -v -qm -kp 0 .17 .9 1 .53 -l350 -L100 -SAdobeRGB1998.icc -cmt -dpp FOGRA39L.ti3
Quick calc -> 87+77+60+100=324%? (icclu ... -ip ... -> 322%) Shouldn't it be more close to 350% if -l350 specified?
A few things: The total ink limit is a maximum, not a target. The ink limit is imposed at the grid vertices, and the linear interpolation within grid cells and output curve lookups may give outputs that sum over the limit. The behavior of a CMYK device near black is not usually simple. In general there are multiple overlapping, discontinuous regions. For a given target color (say L*a*b* = 0,0,0) it does not follow automatically that the closest color will use the maximum possible ink. Some inksets have non-monotonic behavior near black (ie., often adding yellow makes things lighter for some pigmented inks). Having said that, I don't get quite the same results as you: icclu -fb -ir FOGRA39L.icm 0 0 0 -> 1.000000 0.856338 0.575142 1.000000 with the sum 3.43148, but that's with my development code, which may be a little different to the current release. Your result doesn't seem unreasonable. Graeme Gill.