Game Development Reference
In-Depth Information
Figure 6.93 The fi nal result,
after dragging the midtones slider
of the red channel to the right a
value from RGB to Red. When looking at the histogram for the
red channel, drag the midtones slider to the right to remove red
light from this result. The fi nal effect is a little more balanced
(Fig. 6.93 ).
Lastly, you may be wondering about the sliders underneath
the gradient below the histogram. The three sliders below the
histogram—from left to right—correspond to the Input Black,
Gamma, and Input White properties. The two sliders below the
gradient bar—from left to right—correspond to the Output Black
and Output White values. These properties determine the fi nal
output intensity of black and white. If you wanted to reduce the
amount of white in an image (say from 255 to 240), then you
would reduce the Output White value, or drag the slider under-
neath white in the gradient bar to the left. Or, perhaps, the black
values in your image are too dark, you could then drag it to the
right to lighten them up. I use these techniques often when com-
positing to get layers with the same levels of luminance.
The Levels effect is so quick, easy, and ubiquitous, that we'll be
using it all through this topic.
The Levels (Individual Controls) Effect
The Levels (Individual Controls) effect is exactly like the regu-
lar old Levels effect we just looked at. The problem with the stan-
dard Levels effect is that it's not really meant to be animated, or
used with expressions. And, in an animation powerhouse like
After Effects, you kinda need that functionality. So, they created
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