How to add some extra control to the standard After Effects camera lens blur to help you when working with depth mattes.

Here is the expressions I added if they were no clear in the video

Expression for second color controller

L = effect("Layer Control")("Layer");
PC = effect("Point Control")("Point");
L.sampleImage(PC, radius = [.5, .5], postEffect = true, t = time)

Expression for Blur Focal Distance parameter on the Camera Lens Blur
is a straight pick wip value to the first Color Control

effect("Focus")("Color")[0]

and that is it ;-)

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