On Nov 29, 2005, at 4:34 AM, Peter Lacus wrote:
http://www.misenet.sk/USA/OP.html
http://www.misenet.sk/USA/OPb.html
Amazing how the entire emotional impact has shifted, just by [what
did you call it?] manipulating the "blackpoint?"
hehe, I think I was cheating this time but I'm glad you liked
it... :-)
IMHO Godfrey with "blackpoint is off" meant that gray scale of the
former (color) picture is not neutral but is biased towards green
tint - you need properly calibrated display to see it. Anyhow I
wanted to present black&white version of this picture and this was
good excuse to do it. :-)
That's not what I meant at all. In both your B&W and color renderings
of this photo, the low-end values in the foreground are all
compressed together and there is no solid "black", making for a muddy
rendering with poor separation of tonal values in the foreground.
Adjusting the blackpoint and tweaking the rendering curve solves this
issue to a great degree; perhaps the nomenclature I used was not
adequate.
A Curves adjustment applied with masking to leave the sky values
alone improves both. This is a very crude rendering attempt (my
laptop is NOT the best computer for this sort of work... ;-) that
will give you an idea of what I meant. The curves adjustment used is
shown at the bottom of the composite.
http://homepage.mac.com/godders/lacus-OP-curves-adjust.jpg
Godfrey
