Graphics Programs Reference
In-Depth Information
Step Three:
You can t weak the automatic correction
a bit by using the Amount sliders at the
bottom of the panel. For example, if you
thought it removed too much of the
distortion, you can drag the Distortion
slider to the left a little (as shown here),
and it lessens the amount of rectilinear
correction it applied to the photo (notice
how the foreground area has a little bit of
curve back in it, and there's less distortion
around the far-left and far-right sides?
You can see more of the backboard , a s
well). Having this simple slider to tweak
the automatic result is pretty handy (and
you'll probably use it more than you think).
Step Four:
Now, let's look at another photo. In this
case, the image looks bloated (look at the
bridge in the middle—it's bowed), and
look how the buildings on the banks
look like they're leaning back. When you
turn on the checkbox for Enable Profile
Corrections, you'll find out that nothing
happens, and where it would normally list
my lens' make and model, it reads “None.”
That's because for whatever reason, this
image doesn't have any embedded EXIF
data (maybe the image was copied-and-
pasted into a blank document, or maybe
when it was exported from Lightroom,
the Minimize Embedded Metadata check-
box was turned on, so it stripped out
that EXIF data, or maybe Lightroom just
doesn't have this lens profile in its data-
base). Whatever the reason, you need
to help it out and tell it which brand
of lens was used, and which lens it was
taken with, and then it can apply an
automatic correction.
Continued
