Graphics Programs Reference
In-Depth Information
Step Three:
In most cases, all you'll have to do is turn
on the Remove Chromatic Aberration
checkbox (as shown here) and you're
done—Photoshop removes the color
fringe based on your lens' make and
model, which it learns from the meta-
data embedded into the image at the
moment you took the shot. However, if
for some reason the image still needs
more correction (the checkbox alone
didn't do the trick), then you can try get-
ting rid of the fringe manually using the
sliders in the Defringe section below the
checkbox (just so you can see how this
works, go ahead and turn off the Remove
Chromatic Aberration checkbox).
Step Four:
We'll start by trying to remove the purple
(or often magenta) line by dragging the
Purple Amount slider to the right until you
see it's gone. In this case, it removed most
of it, but left a little bit (especially on the
left). That's because the hue in the aber-
ration is a little different (it happens), and
that's when you use the Purple Hue slider
to dial in just the right color. Click right
between the two knobs and drag the
slider way over to the right, and the re-
sidual color is now gone (sometimes you
might have to drag to the left—it just de-
pends on the image. So, try dragging it in
both directions first to quickly see which
direction is the right one). You can do the
same thing for the green aberration—
drag the Green Amount slider to the
right first, and if anything is left over, drag
the Green Hue slider to dial in just the
right hue, until it's completely gone (like
you see here). Again, I rarely have to go
beyond turning on the Remove Chromatic
Aberration checkbox, but at least now if it
doesn't do the job for you, you'll know
what to do instead.
