Graphics Programs Reference
In-Depth Information
Step 11:
If you want to use these RGB curves to
create a cross-processing effect (a classic
darkroom technique from the film days,
but still popular today, especially in fash-
ion photography), it's actually fairly easy.
There are dozens of different combina-
tions, but here's one I like: Start by choos-
ing
Red
in the Point tab's Channel pop-up
menu, and create kind of a steep S-curve
shape by clicking three times along the
diagonal curve (once in the center, once at
the next grid line above, and once below),
so they're evenly spaced along the line.
Now, leave the center point where it is,
drag the top point straight upward, and
drag the bottom point straight down to
create the curve you see here at the far
left. Then, switch to the Green channel
and make another three-point S-curve,
but one that's not as steep (as seen here,
in the center). Lastly, go to the Blue chan-
nel, don't add any points, and just drag
the bottom-left point straight upward
along the left edge (as shown here
at right) and drag the top-right point
down along the right edge.
Step 12:
Of course, based on the particular image
you use, you might have to tweak these
settings a bit (usually, it's the amount you
drag in the Blue channel, but again, it
depends on the photo you're applying
it to). If you come up with a setting you
like, don't forget to save it as a preset in
the Preset panel (just like you did with
your Mega Contrast curve earlier).
