Digital BW, The Print

> 
> I need to correct myself re my end points comment. PS allows a transfer
> function that shifts the end points.

Yes, I missed that also.  


> 
> If you are thinking of linearising a printer or adjusting image luminance
> via the transfer curve this ought to be possible.  The trick will be in
> computing the relevant coordinates.

I modify curves all the time.   I am attempted to make a simple tutorial for
these curves at http://home1.gte.net/res09aij/EZ_Adjustment_Curves.htm 

One can load the Image Adjustment *.acv curves into the Transfer Function
section of Print with Preview.  This avoids the risk of messing up a working
image file.

Paul
www.PaulRoark.com