Graphics Programs Reference
In-Depth Information
Step Seven:
Another advantage of the Parametric curve is that you can use the region divider controls
(under the curve) to choose how wide a range each of the four sliders covers. So, if you
move the far-right region divider to the right, it expands the area controlled by the Lights
slider. Now the Highlights slider has less impact, flattening the upper part of the curve,
so the contrast is decreased. If I drag that same region divider control back to the left in-
stead (shown here), it expands the Highlights slider's area, which steepens the curve and
increases contrast.
