Digital BW, The Print

Ernst,

> Paul Roark wrote:
> > ...
> > Both Adobe RGB and sRGB use a gamma of 2.2 because it is felt to more
> > closely approximate the human visual response.


> 
> If there's one mailing list and group of people that could
> promote a perceptual greyscale curve for use in B&W
> photography it should be this list. Roy gave us that space and
> it is closer to human visual response than any of the gamma
> (old photography attempt to perceptual) and dotgain
> (completely different concept) choices.
> 
> I know that Gamma 2.2 works and isn't in contradiction with
> the rest of the workflow but why not promote a conversion to
> the QTR space as it is available?
> 

The main reason I tend to recommend Gray Gamma 2.2 is that it is such a
widely used standard.  For people starting out, they can basically ignore
the issue and have the right settings. 

I would not overestimate what this group can do.  I think we all stand on
the shoulders of giants.  Once standards are set that are close, even if not
technically the best, they are almost impossible to change -- consider the
keyboards we're using.  On the other hand, we're no powerless.  But it's
like influencing the trajectory of objects in space.  A very slight lateral
force can have a dramatic influence on the long term trajectory of an
object.  

By the way, the R220 UT-R2 setup is on my index now.  See
http://home1.gte.net/res09aij/index.htm


Paul
www.PaulRoark.com