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  • Slog3 footage round trip from Premiere to After Effects and back

     Michael blaq updated 1 month ago 2 Members · 2 Posts
  • Thomas Hannen

    December 8, 2022 at 3:26 pm

    I am working with MXF footage that was shot with a Sony S-Log3/S-Gamut3.Cine curve.

    My sequences in Premiere are a working colour space of Rec.709 and I’m interpreting the footage as Use Media Colour Space from File, which is correctly identifying the footage as Sony S-Log3/S-Gamut3.Cine


    In After Effects, I have chosen Slog3 as a working space (I didn’t have that option in Premiere).


    When I open the same footage in After Effects, and immediately export it, without applying any effects at all, I see banding when I re-import it back to Premiere.


    I’m working at 32bits per channel in AE.

    I have tried exporting from AE as lossless (animation), ProRes 4444XQ, tried various different colour settings on the export colour management settings, but I still see banding when I bring it back to Premiere.

    What’s the best workflow for this process?

    I plan to have the project graded externally using Resolve when editing and vfx is completed.

    It’s 4K 25fps footage shot Slog3.

    The project is primarily to be delivered for the web at 4K, but may be shown elsewhere in the future.

    Many thanks,

    Tom

    Camera file properties as shown in Premiere, and images of various Premiere & AE settings attached, as well as a couple of screenshots to try and show the banding.

    XDROOT/Clip/A004C010_19030613.MXF
    Type: MXF
    File Size: 3.15 GB
    Image Size: 3840 x 2160
    Frame Rate: 25.00
    Source Audio Format: 48000 Hz – 24-bit – 8 Channels
    Project Audio Format: 48000 Hz – 32 bit floating point – 8 Channels
    Total Duration: 00:01:47:12
    Pixel Aspect Ratio: 1.0
    Alpha: None
    Color Space: Sony S-Log3/S-Gamut3.Cine
    Color Space Override: Off
    Input LUT: None
    MXF File details: Wrapper type: MXF OP1a (type: SingleItem SinglePackage MultiTrack Stream Internal)
    File generated by: Sony, Mem (2.00)
    AVC Unconstrained
    Bitstream Format: Sony
    Gamma: S-Log3 Cine

  • Michael blaq

    December 27, 2022 at 3:32 am

    Hi Thomas,

    Removing banding is done this way with AE. See the attached link.
    https://www.rocketstock.com/blog/removing-banding-in-after-effects/

    Have you tried this yet?

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