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Thread: Unseen by Camera + Transparency map = Bad Alpha map?

  1. #1

    Unseen by Camera + Transparency map = Bad Alpha map?

    I'm doing a composite pass of my main figure in a room. The background portion has been rendered and I will be compositing the main figure walking in the scene. To keep the lighting on the figure consistent with the room but only render the figure, I made all items in the room "Unseen by Camera" and made all their alphas to be black. The figure has a dress and the bottom trim is surface with a transparency UV map. Upon rendering, the transparent parts of the trim seem to reveal some parts of the room in places and the alpha channel has some correct parts and some not so correct parts. Is this a known bug? If the alpha can be corrected, the main render errors I can live with.
    Also I tried to use a clip instead but for some reason it didn't clip at all...

    win x64 - v 11.5.1

    Click image for larger version. 

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  2. #2
    Of course, after spending half the day pulling whats left of my hair out, once I post I solve my own problem! I needed to check Unseen by rays on anything behind the transparency map....

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