>Hi all
>I have been generating profiles with spyder3print for use with canvas
on a Epson 9880.
>When using a rendering intent of "perceptual", I get clipped shadows
on the monitor ( CS3 soft proof) and on the print. This manifests
itself as jet black patches/blotches in the darkest areas of the print.
>When I use a rendering intent of "relative colorimetric" and "Black
point Compensation" is switched on, I don't have the clipping problem.
>Q: is there something that needs to be done while profiling to set the
printer black point for "perceptual" rendering intent.
What do you mean by "clipped blacks" in the softproof? I would expect
that you would actually get weak blacks, and need to adjust the Reference
Black value when building a profile to get the desired results. If your
Blacks are actually clipped (meaning dark grays and Blacks all register as
Black) then you would need to adjust for the fact that your canvas texture
is effecting your black measurement. If using RelCol and BPC provides this
adjustment for you, thats great. Personally I'd go in the other direction
with Saturation intent, and No BPC, and would make sure my black measurement
actually reflected ink black, not ink black over texture.
C. David Tobie
Product Technology Manager
Digital Imaging & Home Theater
Datacolor
CDTobie@...
www.datacolor.com/spyder3