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Digital BW, The Print

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Message

New Grayscale LAB workspace and proofing

2005-01-29 by Johnny Eades

Hello all folks who are using XP and Photoshop for working with QTR 
for printing images utilizine the new LAB Gray workspace for QTR. i 
was having trouble understanding the workflow, but after reading 
several of the messages; I think I've got it right for my 
understanding. Let me list the steps I use and am able to get a 
satisfactory image printed from one of my standard images that I use.

1.From the Photoshop menu Image>Mode>Convert to Profile (Source space-
-probably Adobe RGB) (Destination Space--Profile QTR Gray LAB space) 
(Conversion options--Adobe ACE engine) (Intent--Perceptual)(Use Black 
Point Compensation)

This will convert the file to the new LAB Gray Space.

2. My monitor is calibrated to Gray Gamma 1.8 and 5000K, and I have 
found that I have to initially proof as Gray Gamma 1.8 (which 
lightens the screen image considerably, so I apply a curve to bring 
the midpoint of 128 down to 100) and after merging layers, I then 
proof at QTR Lab-Matte.

This now has the image on the screen as it will print on paper. After 
giving it the final touches, I save it as a .tif file to use in QTR. 
This workflow may be necessary only for those using XP. I think Roy 
and Steve(s) all use Mac systems, which has Colormatch that may 
correct some things automatically for them. I hope this helps someone 
who has been learning the new LAB Grayspace.

Your friend in Photography,

Johnny

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