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Adobe After Effects: Lens Flare in AE and Premultiplication Explained

Chapter: Compositing Tools and Techniques

Topic: Transfer or Blend Modes

Ben reveals not only the easy steps to giving a lens flare an alpha channel for exporting, but also explains what premultiplication means. With this understanding, you may more easily solve some of your trickier compositing problems. In most programs, such as Nuke, Fusion, or Shake, you control premultiplication and predivison manually. Since After Effects does this all for you, it can become very frustrating if you are accustomed to doing this manually and find that you cannot in AE. This tutorial will explain a little background information on how compositing applications create a composite.

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