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Casting 3D shadows on AE produces artifacts

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Daniel Sánchez de MiguelCasting 3D shadows on AE produces artifacts
by on Sep 12, 2012 at 7:22:15 pm

Hi all,

I've got a comp with some images being dropped or slide on top of a background. There's a camera with a slight move that creates the 3D space. Objects are well distributed so they don't overlap in the "x" axis. There's a spot light that creates a vignette effect and also allows the objects to project 3D behaving shadows over the background.

Once the objects land on the background the camera move remains and here is where I am seeing waving artifacts on the edges of the shadows. I've tried putting shadows with Layer Styles and these look fine but don't behave the way I'd like. I am rendering Animation so output quality is not the issue, as far as I know.

Is this a common problem with 3D cast shadows in AE? This is AE 5.5 btw.

Here's a link to the file. First Picture is in shadow only mode so the problem it's seen more clearly.

Thanks for your help!


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mathew fullerRe: Casting 3D shadows on AE produces artifacts
by on Sep 12, 2012 at 8:46:08 pm

Shadows can do this in AE in these instances where 2 flat planes are really clise together ( like a piece of paper on a table). Try giving them a little more space to breathe.

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