Datacolor User to User Support Group.

>I've been using PFP since it came out. With a little fussing,
>repetition and tweaking I get fairly decent results with a variety of
>papers on an Epson 2200 and an R220, both with MIS Pro inksets.
>
>Yesterday I tried to print an image that was mostly grey, with two
>faces, some flowers and a cross in full color. The image started life
>as a regular RGB image. I selected the soon-to-be-grey parts and set
>the saturation to zero (I also tried other B&W techniques).

No problem there...

>When I print it with my PFP-produced profile, the colored sections
>look appropriate, but the greys are off and ugly. Midtones and higher
>tones look grey, but from about the midpoint down into the shadows
>the tones are nowhere near neutral. Unfortunately I'm partly red-
>green colour blind (and hence tend to project green and occasionally
>red into/onto surface colours I can't see well), so even trying to
>describe the colour is pretty hopeless.

Send a .zip file of you measurements to me at davem@...
and I'll have a look at them for you...:-)

>What is the best way to use the PFP system to tell me how far off I
>am on the different color axes I can tweak when building profiles? I
>simply cannot rely on *seeing* that something is too yellow or cyan
>or whatever, although generally I can tell that something is "not
>right".

You can't tell directly, from inside PFP, but you could make yourself
a test image of gray steps and then soft-proof, through the profile,
in Photoshop, and use the Info palette to see what numbers you get
from grays, and near-grays


Best regards,

-- 
David Miller
Senior Software Developer, Digital Color Solutions
ColorVision