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Thread: Compositing problem....

  1. #1
    Registered User hard8's Avatar
    Join Date
    Jan 2006

    Compositing problem....

    I have a scene with an object that is going to be composited over live action.
    I have an object that is catching the shadow of the object.

    The light is an area light creating a soft shadow.

    The problem I am having is whenever I render it out
    and pull it into After Effects, the shadow is gone.

    I need the shadow catcher to be invisible, but I need the shadows to come out in the alpha.

    I could swear I've done this before.

  2. #2
    Army of 1 CC Rider's Avatar
    Join Date
    Jun 2006
    Charlotte, NC
    Sounds to me like you may need to composite in LW in order to get your object to cast shadows on your plate footage.
    (I think that's what you're trying to do...)
    I very well could be wrong on this and I'm sure it will get rectified quickly if that's the case, but I don't believe LW will render out the shadow cast from your object out in to empty 3d space for you to import into AE.

    The compositor built in to LW is pretty powerful...check out Proton's tutorial on compositing
    and here is the page with the rest of the tutorials...
    Hope this helps!

  3. #3
    obfuscated SDK hacker Lightwolf's Avatar
    Join Date
    Feb 2003
    Stuttgart, Germany
    Why an invisible shadow catcher? Make it black and turn the alpha to be the shadow density (surface properties)... and render on black.



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