Digital BW, The Print

Roy

Ok now you are confusing me.  First of all, Load Gray won't let me select
the extracted file.  Secondly Daniel posted a 21 step wedge in LAB ie each
step represented a 5% change in L from 0 to 100 (Paul also sent me one
directly).  I can leave my grey space the same (gamma 2.2) and few the LAB
step wedge (colorsync manages this for me) and the eyedropper gives me the
right LAB readings.  It is the image file that needs the right LAB pixel
values.  

Steve


> From: Roy Harrington <roy@...>

> 
> Well after writing that Photoshop didn't have a Lab oriented gray space,
> I figured why not??
> 
> So this is an close approximation:
> 
> http://www.harrington.com/LabGrayscale.zip
> 
> Just download it and extract.
> 
> Then in PS Color Settings for Gray -- Load Gray and load this profile.
> Its called Lab Grayscale.icm
> 
> Assign this Profile to your 21step or image.
> Its not quite perfect, the 95 step is only Lab 4 but all the other steps are
> right.
> If this is useful I can probably make a perfect one later.
> 
> 
> Roy
>