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Activity Forums DaVinci Resolve VFX Workflow – Converting S-Gamut3/Linear to S-Gamut3.cine/sLog3?

  • VFX Workflow – Converting S-Gamut3/Linear to S-Gamut3.cine/sLog3?

    Posted by Brian Steele on October 16, 2023 at 8:12 pm

    Hello, may I ask a specific question that was a request from a VFX vendor? I’m on an indie feature with a good budget, which the director cut in Resolve. (I’m the assistant editor). The VFX vendor would like me to send a check H264 file of a VFX plate (EXR sequence) with the show LUT applied for comparison to their secondary output. The project was shot with a Sony Venice. The VFX vendor receives EXR sequences with S-Gamut3/Linear bake. They then convert it from linear to log in Nuke using sGamut3.cine/sLog3, and then finally apply the show LUT.

    They’ve asked me to recreate this process in Davinci Resolve, and kick out an H264 file as a double check. But when I bring in the linear EXR plate sequence into Resolve, I can’t find a way to convert from linear to log in a way that matches their process. There doesn’t seem to be anything to recreate this in the “Sony” or “VFX IO” tabs in the LUTs section. Any help or tips would be so appreciated. (This Avid user can’t quite figure this one out!)

    —–

    Sony Venice original camera file is .mxf with profile: Rec.709 Gamma 2.4

    Currently using DaVinci Resolve 18.6 build 9

    Editing with an iMac w/ Monterey version 12.6.9

    Processor: 4.2 GHz Quad-Core Intel Core i7

    Andrew Shtern replied 7 months, 1 week ago 3 Members · 2 Replies
  • 2 Replies
  • Tom Morton

    October 17, 2023 at 8:00 am

    You may not find a built in function, you might need to use an online generator to create the LUT you need and use it as a conversion tool. Check out this post: https://creativecow.net/forums/thread/lin-to-log-ae/

  • Andrew Shtern

    October 18, 2023 at 8:53 am

    What are the color management settings of your Resolve project? You’re saying that the original camera footage is Rec.709/G2.4, but VFX considering it sGamut3.cine/sLog3. So I guess either you’re mistaken about the camera settings, or at some point you convert the camera footage from Rec.709/G2.4 to sGamut3.cine/sLog3.

    In any case, the most appropriate way to convert between color spaces in Resolve is a Color Space Transform tool from Resolve FX. It is pretty much self-explanatory, you just need to set the correct input/output settings.

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