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After Effects POV Null

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Evan Jarvi
After Effects POV Null
on Nov 29, 2012 at 2:46:19 pm

First time posting- this site has been such an aid to me in the past...hopefully you guys can help me.

I have a 3D camera with all the 3D tracking data- what I'm trying to do is have a reticle that hangs in front of the camera. Here's the tricky part: I don't necessarily want it to be parented to the background plate and function like a tracking point, I would like to have it stay centered, however react to the movement of the camera- kind of like a rifle scope's crosshairs.
For instance, as the camera pans down across the scene, the reticle stays mostly centered, but drifts slightly with the movement, and "snaps" back once the camera has reached it's mark.
I've tried keyframing it by hand, but it doesn't look real enough...
I'm assuming there's someway of translating the 3D tracking data into some sort of velocity or turbulence field for the reticle, but I'm not that great with expressions...
Any ideas?
Thanks everyone.

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Todd Kopriva
Re: After Effects POV Null
on Nov 29, 2012 at 10:35:16 pm

I'd parent the reticle layer to the camera and then add whatever secondary animations (wiggles, etc.) to the child reticle layer.

Todd Kopriva, Adobe Systems Incorporated
After Effects quality engineering
After Effects team blog

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