Digital BW, The Print

On Nov 24, 2008, at 9:01:00 AM, "Michael King" <drmrking@...> 
wrote:

Epson set up ABW so that the "dark" setting approximately matches 
gamma 2.2
image.
Note on a Mac your default gamma is probably 1.8.
___
What default gamma? The display might be using a gamma 1.8 profile, 
but that can be changed simply by running the calibration assistant 
and choosing gamma 2.2 (or better yet, by hardware calibrating to 
gamma 2.2). Images are in the workingspace of the application, not at 
any OS default, and the likely Photoshop workingspaces are sRGB or 
AdobeRGB, both of which are gamma 2.2. If you are printing from an 
uncolor managed application (certainly not recommended), then on 
Windows this should trigger an sRGB assumption (which is gamma 2.2), 
and on the Mac a main display profile assumption. See notes above to 
assure that your display is running at 2.2, not 1.8 on the Mac...
--
C. David Tobie
WW Product Technology Manager
Digital Imaging & Home Theater
Datacolor
CDTobie@...
www.datacolor.com/spyder3


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