Game Development Reference
In-Depth Information
Figure 6.5 The fi nal results, with
the original image on the left, the
Auto Levels result in the center,
and the Auto Color results on
the right.
when it comes to lightening footage, it can still have some other
useful purposes. And, knowing why this effect can be destructive
can help you understand why effects like Levels and Curves are
so powerful.
The Brightness & Contrast effect only has two properties:
Brightness and Contrast. Many users of Photoshop and After
Effects turn to a Brightness & Contrast adjustment to quickly
brighten an image without the steep learning curve of, say, Levels
or Curves. But, there is a serious problem here. The Brightness &
Contrast effect universally lightens or darkens every pixel on a
layer. Let's see this in action.
Import the KS103.mov clip from the Artbeats folder in the
Media folder of the exercise fi les. This stock footage clip, from
Artbeats shows some children playing. Notice the depth of the
shadows in the trees behind the kids on the right side of the
image (Fig. 6.6).
In the Project panel, drag this piece of footage down to the
Create a new Composition button at the bottom of the Project
panel. This will create a new composition with the same specs
(e.g. size, pixel aspect ratio, duration, and frame rate) as the foot-
age. Then apply the Brightness & Contrast effect to the KS103.
mov layer in the newly created comp. Take the Brightness value
to 50 (Fig. 6.7 ).
Now look at the shadow areas by the trees. They've been light-
ened, too! That's bad news, folks. When you brighten an image,
you want to keep shadow areas dark. So, this is not the way it
should be.
You could use the Contrast part of Brightness & Contrast, but
there are many other better ways to increase image contrast.
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