Datacolor User to User Support Group.

In a message dated 2/23/06 3:58:28 PM, davedoughman@... writes:


> 1. Can PrintFixPro help me make B&W profiles for the Epson 2200? 
> 
Yes, for printing B&W or tinted B&W via the color mode, using a custom ICC 
profile for control. This will result in nice enough prints, but not as neutral 
or low metamerism as you could get using the same process with the 2400.


> Used
> to tweak Epson 2400 B&W printing?
> 
Only if you are printing via the method above. Otherwise, all it can do for 
you is allow you to take readings for building a preview profile via the QTR 
stuff...
> 
> 2. I live in Utah and photograph the great parks here. 
> 
Right, as in Moab paper....

> Each park has a
> slightly different color red rock. Some lean towards red/blue and
> others towards red/brown. Is there a way to read a sample rock (I
> would pick up in the parks) to determine it's color balance then I
> should be able to set that color in Photoshop using the eye dropper.
> 
Life is not that simple. Rocks are influenced by the light color that shines 
on them (warm sun, cool sky) reflections from other rocks, atmospheric 
perspective   (from dust and humidity) etc... so a measurement from the stone is only 
one factor in what the visual color in the image holds.

>  I
> tried to read my GretagMacbeth Color Checker and found I could only
> read in LAB not REB. LAB info is foreign to me and I don't know how to
> use it for what I'd want to do
> 
Lab measures absolute color values. RGB is relative, and only has absolute 
meaning when tied to Lab...
> 
> Any thoughts on the above would be appreciated.
> 
I've tossed some in, for what they're worth.

C. David Tobie
Product Technology Manager
ColorVision, Inc.
CDTobie@...
www.colorvision.com
>