10 minute After Effects expressions tutorial, detailing how to use toWorld() and fromWorld() to make a robust camera targetter that doesn't care if camera, target or both are parented to other layers.
First of a series of ten tutorials showing some very cool and very useful expressions that are only a few lines long.
Video is in SD on Vimeo, but you can download it in HD, look down and to the right on this page!
Find Felt Tips After Effects templates at Videohive.
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