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Activity Forums DaVinci Resolve DaVinci + Avid gamma shifting

  • DaVinci + Avid gamma shifting

    Posted by Alex Ander on June 4, 2012 at 8:55 pm

    Hello to everyone! i need advice…

    We have a project in Avid with RED files in AMA. We have sent EDL to DaVinci Resolve. Graded as full range data…rendered. Made relink to graded media in Avid and all video was shifted for 7.3 IRE. and became low contrasted

    Why it’s hapenned?

    Alex Ander replied 13 years, 11 months ago 4 Members · 9 Replies
  • 9 Replies
  • Pepijn Klijs

    June 4, 2012 at 9:28 pm

    Avid probably thinks it’s a legal scaled clip. Try to render in legal range instead of full range and you should get a good result.

    Editor/Colorist, Amsterdam, The Netherlands
    http://www.pepijnklijs.nl

  • Alex Ander

    June 4, 2012 at 9:43 pm

    You right, Pepijn…it;s should be that way, but when i was trying grade in legal it was strange thing… even if in waveform monitor my black was really crushed down. it was’nt black on the screen. And when i switched to full range mode it’s all became great. Black was black at “0” on waveform and on the screen… =\

    and then Avid shifted gamma…

    any idea why?

  • Pepijn Klijs

    June 4, 2012 at 9:46 pm

    Are you watching on a reference monitor or just a computer screen?

    Editor/Colorist, Amsterdam, The Netherlands
    http://www.pepijnklijs.nl

  • Alex Ander

    June 4, 2012 at 9:48 pm

    Reference plasma screen.

  • Pepijn Klijs

    June 4, 2012 at 9:52 pm

    Maybe your monitor setting in resolve were set to full range when grading in legal scale? That could be the reason why it looked ‘gray’ in resolve when grading in legal.

    Editor/Colorist, Amsterdam, The Netherlands
    http://www.pepijnklijs.nl

  • Chip Murphy

    June 5, 2012 at 7:22 pm

    I had this problem when I would export to a ProRes QT on MC5.5 under Rec 709. Re exported using DNxHD and all was fine.


    Drexel University Post Production Facility Manager
    08 Mac Pro Octo
    GTX470
    Resolve 8.2
    Tangent Wave

  • Alex Ander

    June 5, 2012 at 9:15 pm

    O, thank You, Chip! i’ll try

  • Søren Gensbøl

    June 6, 2012 at 10:25 am

    Had the same problem when importing ProRes HQ into avid MC 6.

    The easy solution to avoid the gamma shifts is to choose the Prores HQ format when importing, and make sure your project is set for Progressive or interlaced, the same as your source.

    Then MC just rewraps the Prores video in an MXF container, and there is no gamma shifts or other nasty things

    Cheers
    Søren

  • Alex Ander

    June 6, 2012 at 12:22 pm

    it’s good to know, Søren. Thank You!

    so how to be in this case with RED files workflow as AMA ?

    From Resolve we rendered as MXF 220 but get gamma shifting when relinked AMA RED in MC on davinci MXF render.

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