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Forums Adobe After Effects 32 BPC blending mode issue

  • 32 BPC blending mode issue

  • Nico Jones

    December 15, 2012 at 10:57 am

    Hi guys,

    When I switch to 32 BPC mode in AE and set up some Particular layers, apply some white glow and set the blending mode to screen (as I’d usually do at 8 PBC to get them to sit nicely together), I’m getting weird colour results where the layers overlap. It looks like it’s going ‘inverse’ on the blend; black instead of white.

    Any way around this?? it’s not just a particular thing.



  • Vishesh Arora

    December 15, 2012 at 12:40 pm


    Blending modes behave differently in 32-bpc mode as compared with 8-bpc or 16-bpc mode.

    Read this:

    Vishesh Arora
    3D and Motion Graphics Artist
    Films Rajendra


    Demo Reel(3D):

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  • Darby Edelen

    December 15, 2012 at 6:28 pm

    It just has to do with the math being done in the blend mode. Screen is expecting values to be in the 0-1 (black to white) range.

    You should use the ‘Add’ blend mode in 32bpc instead.

    Darby Edelen

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