Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Ernst Dinkla <E.Dinkla@c...> 
wrote:
> Amadou Diallo wrote:
> 
> > With StudioPrint at least, it's a two-step process. To grossly simplify, the function 
of 
> > linearization is to map a straight line of input to output (linear). Following that is 
a dot 
> > gain adjustment curve setting. This value chosen for this setting adds a non-
linear 
> > gamma-type curve which is better suited to human perception, as we don't "see" 
in a 
> > linear fahion.
> > 
> > amadou diallo
> 
> Amadou,
> 
> That extra step is only applied in B&W calibration I guess ?
> 
> Any data available of that gamma curve ?
> 
> When Roy uses Lab's linear greyscale isn't he getting the same 
> necessary deviation from strict linearity ?  A perceptive greyscale.
> 
> Ernst

Yes, Ernst.  A straight line in Lab produces a distinct upward
curve when measured in density units.

Roy