Digital BW, The Print

I cannot convert/assign to the RGB Lab space. I'm getting an error 
message telling me that the icc profile is invalid. I'm running PS 6, 
but I don't think that should make a difference. I also experienced 
the same problem when I tried to change my working space to RGB Lab 
space.

Chris Hargens



  --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Roy 
Harrington" <roy@h...> wrote:
> 
> 
> I've added a set of the same basic Lab and Printing profiles that 
have
> been changed to RGB format.   These should be used for printing 
> using Qimage.  Set the printer output icc profile to one of the rgb 
profiles.
> I'm not positive how to change the file profile to RGB Lab in 
Qimage but it
> works fine in Photoshop.   
> 
> Note that the RGB Lab space is a true RGB space but it has a 
transfer function
> with linear Luminosity rather than a Gamma transfer function.   It 
is not a
> space with an L, a, & b channel.  It might be interesting to use 
this for color work.
> 
> Roy