Latest post Wed, Aug 12 2015 12:55 AM by hbrock. 3 replies.
Page 1 of 1 (4 items)
Sort Posts: Previous Next
  • Tue, Aug 11 2015 7:22 PM

    • MrNavey
    • Not Ranked
    • Joined on Tue, Aug 11 2015
    • Posts 2
    • Points 30

    At a loss: DPX Output of R3D files resulting in wrong color

    Hey all! First post here! Excited to finally join the community :D

    I have been having issues with my colorist shooting back my outputs saying they are having issues with the color. No other information has really been given to me. We sent them the bin with the sequence and one raw R3D file to do a test. They say they created in the correct way and then tried to recreate my "wrong settings" and said they pretty much got it to look the same as mine by adding a a Legal to Full LUT. They think this is the problem.

    R3D files are transcoded to offline in RedCineXPro and brought into Avid. Editing magic happens and we eventually get picture lock.

    I open all the R3D files in RedCineXPro, revert to camera settings (as shot) and apply a RedLogFilm look to it. Nothing else is changed besides the gamma space from RedGamma4 to RedLogFilm. 

    I then AMA all these R3D files into Avid and relink them to the sequence. Everything comes online and all my footage is in RedLogFilm. http://i.imgur.com/u1psYF3.png http://i.imgur.com/AE0Bldi.png I do refresh the sequence to make sure the RedLogFilm is actually applied.

    I then output as DPX 16bit in full range and high debayer settings. http://i.imgur.com/2ZRFLuV.png

    Based on them thinking a LUT is being applied somewhere, I have a feeling ONE of my settings are off and I have a feeling its one of these:

    What source color space is generally used for r3d files?

    What project settings color space is generally used for projects using r3d?

    Any help is appreciated and I'll be here to try and answer any questions! Thanks! 

  • Tue, Aug 11 2015 9:16 PM In reply to

    Re: At a loss: DPX Output of R3D files resulting in wrong color

    The first thing to do is not select “full range”. You want to select “video” for levels. Avid’s wording has been confusing for many users for many years and has been addressed somewhat in the most recent release. See http://www.jobterburg.nl/Publications/601_709_RGB.pdf for more info on that. 

    Media Composer /w Symphony option | PT-HD | Win7Pro64 HP | OSX MBP | ISIS5000 | Nitris DX | Artist Mix & Transport & Color | AJA T-Tap | Decklink... [view my complete system specs]
  • Tue, Aug 11 2015 9:40 PM In reply to

    • MrNavey
    • Not Ranked
    • Joined on Tue, Aug 11 2015
    • Posts 2
    • Points 30

    Re: At a loss: DPX Output of R3D files resulting in wrong color

    This definitely seemed to fix the issue. 

    Here's what my histograms look like (from Photoshop):

    This is what the FULL RANGE output looks like http://i.imgur.com/xmxX3af.png

    This is what the VIDEOS output looks like http://i.imgur.com/5tKORVt.png

    My final question would be with the source settings for these. Should I be using REC 709 [Video levels]

     

    Thanks so much! :D

  • Wed, Aug 12 2015 12:55 AM In reply to

    • hbrock
    • Top 25 Contributor
    • Joined on Thu, Oct 13 2005
    • Santa Monica, CA
    • Posts 5,520
    • Points 64,055
    • Moderator: Avid Xpress Pro Mac
      Moderator: MCA Mac
      Moderator: Media Composer Getting Started

    Re: At a loss: DPX Output of R3D files resulting in wrong color

    You should check your settings in Red Cine Pro to see what you're sending out.  If you're applying the LUT in Red Cine and making Video level (601/709) media then applying the RedLogFilm setting in the AMA Source Setting could be compounding the LUT by applying it twice.  Anytime you see vertical slices in the histogram it's a "sign of bad things to come".

    MacPro, MacBook Pro and a Cube (masquerading as a kleenex dispenser). [view my complete system specs]

    Must think of something clever to go here...

Page 1 of 1 (4 items)

© Copyright 2011 Avid Technology, Inc.  Terms of Use |  Privacy Policy |  Site Map |  Find a Reseller