• Blackmagic Cameras

  Working with prores for VFX – having problem with clamped whites

  Posted by Calvin Romeyn on July 27, 2015 at 9:43 pm

  I’m shooting a VFX heavy short-film with the Black Magic 4K Production camera.

  I shot some tests using prores 422, but when I bring the clip into Nuke (or Premiere, or After Effects), all my highlights are clamped at 1, instead of having range beyond white.

  I also tried using prores QTs from other people’s BM cameras, same problem. So it can’t be my camera.

  I have a feeling I’m doing something wrong in my workflow.

  Are prores Quicktimes only meant to be used in Final Cut and then exported as a DPX sequence? I tried viewing them on a PC and a Mac, but I don’t have Final Cut. I was hoping to edit everything in Premiere Pro, then export DPX sequences to do the VFX

  Anyone experienced this problem with having no dynamic range with Prores QTs?

  Chris Wright replied 10 years, 8 months ago 2 Members · 1 Reply
• 1 Reply

• 

  Chris Wright

  September 12, 2015 at 11:53 am

  Adobe CinemaDNG @ 2.5K RAW
  Apple ProRes Log 4:2:2 HQ @ 1080 “Film” (log) or “Video” (Rec. 709) gamma.
  Avid DNxHD @ 1080 “Film” (log) or “Video” (Rec. 709) gamma.

  here’s the 3 modes. if you selected rec709, there is no beyond white, its burned in. if you selected log, its stuck in there
  as needing a log to linear lut called a BMD film log lut in Resolve. I like captain hook’s grading luts myself.
  https://www.captainhook.co.nz/blackmagic-cinema-camera-lut/

  I made a LUT similar to BMD lut that you can use in AE.
  https://f1.creativecow.net/9256/bmd-film-raw-to-log-64-emulator

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