Adobe After Effects CC Classroom in a Book (2019 Release), First Edition

(Barré) #1

  1. In the Lens Flare area of the Effect Controls panel, do the following:


Change Flare Center to 960 , 538.
Make sure 50–300mm Zoom is selected in the Lens Type menu.
Decrease Flare Brightness to 0%, and then click the Flare Brightness stopwatch icon
( ) to create an initial keyframe.



  1. Go to 0:10.




  2. Increase the Flare Brightness to 240%.




  3. Go to 1:04, and decrease the Flare Brightness to 100%.




  4. With the Nova layer selected in the Timeline panel, press the U key to see the animated
    Lens Flare property.




About high dynamic range (HDR) footage


After Effects supports high dynamic range (HDR) color.
The dynamic range (ratio between dark and bright regions) in the physical world far
exceeds the range of human vision and of images that are printed or displayed on a monitor.
But while human eyes can adapt to very different brightness levels, most cameras and
computer monitors can capture and reproduce only a limited dynamic range. Photographers,
motion-picture artists, and others working with digital images must be selective about
what’s important in a scene, because they’re working with a limited dynamic range.
HDR footage opens up a world of possibilities, because it can represent a very wide
dynamic range through the use of 32-bit floating-point numeric values. Floating-point
numeric representations allow the same number of bits to describe a much larger range of
values than integer (fixed-point) values. HDR values can contain brightness levels,
including objects as bright as a candle flame or the sun, that far exceed those in 8-bit-per-
channel (bpc) or 16-bpc (non-floating-point) mode. Lower dynamic range 8-bpc and 16-bpc
modes can represent RGB levels only from black to white, which represents an extremely
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