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Camera FocusControl

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Interactively control camera focus distance.
The camera will focus wherever your null or solid happens to sit. This expression is golden when you're doing a lot of Depth of Field work.
After Effects 6
Camera
Expressions

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1) Make sure you've got a camera in your composition.
2) Create either a solid or a null and name it "focusControl" (note: you can name your solid when you create it, but to change a null you have to select it in your comp window and hit the 'enter' key. You can then type a new name for it.)
3) Make the solid/null a 3d object.
4) Apply this expression to the "Focus Distance" parameter of your camera:
length(thisComp.layer("focusControl").transform.position, toWorld([0,0,0]))


Keywords

3D, camera, focus, depth, control

(Min. Version: After Effects 6, Category: Camera, Type: Expressions)
posted by peter17 on Nov 08, 2008

 

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