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Nösnäs Media
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April 24, 2018
Answered

P3 Gamma support? iMac Pro unusable due to gamma shift

  • April 24, 2018
  • 13 replies
  • 13170 views

I found out a few weeks ago that the colors in Premiere doesn't look the same after export.

There's a huge gamma shift, and i later on found out this is due to the P3 Gamma on most Macs later than 2015 that PP can't handle.

So, right now i'm on a $9,000 iMac Pro and i can't use it professionally as Premiere doesn't show what's actually happening in the grade.

I know there's a few workarounds with different LUT's etc, but they're not 100% accurate and it's not really an acceptable workflow after paying loads of money on high end computers and software. It's so damn frustrating. I don't want to switch to FCPX, but i can't deal with this for much longer.

So, is there any real solution on this problem, except getting an external display?
I recently tweeted Adobe about it, so i'm hoping to actually get an answer on this topic.
And hopefully a date for when the support for color management will be out.

I'm 100% sure about the problem as i've been researching and testing everything out. So please avoid claiming that the problem is something else

    This topic has been closed for replies.
    Correct answer Kevin-Monahan

    HI,

    A P3 to Rec.709 LUT applied to an adjustment layer over your entire sequence will help you get WYSIWYG color control. You can check the results in VLC (not QuickTime Player). If that does not work for you, please let us know.

    As others have said, a broadcast monitor attached to your system is another way to check real world color.

    You can also make a feature request for better color management in Premiere Pro here: Premiere Pro: Hot (1271 ideas) – Adobe video & audio apps

    Regards,
    Kevin

    13 replies

    Show previous replies
    T
    TKX_0104
    Inspiring
    June 5, 2018

    Same problem! i buy iMac Pro and I noticed this problem...

    in my thunderboltdisplay is working normal, but in imacpro monitor it gets saturated...

    another thing I realized was when imacpro started. in the login part at the beginning gets saturated ;(

    R Neil Haugen
    R Neil Haugen
    Legend
    June 5, 2018

    You have to check out the gear and the needs you're working with before purchasing. I would never buy a monitor without knowing what color space it works in, how it does relative to colors of the spaces I need, the gamma, all that. Even for my UI monitor, I know what the color/gamma is going to be. The 'confidence' monitor used for Mercury Transmit is the more crucial, and must be up to what I need, but I'll even be close with the main UI monitor.

    That said, the only two places I'm totally concerned are 1) that confidence monitor and 2) what the scopes show. And the UI monitor ain't gonna be nearly as tight as that other one, so I don't judge anything by how it looks in the Program monitor on the UI interface.

    Neil

    Everyone's mileage always varies ...
    T
    TKX_0104
    Inspiring
    June 6, 2018

    your answer does not solve this problem ;(

    If the problem is on the monitor, that's okay.

    but if the problem is in the software or some bug, I'd like it to be fixed.

      R Neil Haugen
      R Neil Haugen
      Legend
      April 25, 2018

      PrPro doesn't have options for user-settings for color management. It's a Rec709 app, which means sRGB, the standard for professional video production.

      Your fancy Mac doesn't give you the options to set color profiles either. I notice people tend to complain about Adobe not offering options when their gear doesn't allow options either. Seems strange to me, both ends could ameliorate the problem.

      Using the new 'UserVoice' feedback system, go search for color management requests ... and pile on. We do need more control in PrPro.

      Neil

      Adobe Bug /Feature Request form: https://adobe-video.uservoice.com/forums/911233-premiere-pro

      Everyone's mileage always varies ...
      N
      Nösnäs MediaAuthor
      Participating Frequently
      April 25, 2018

      I'm not really sure what you're talking about here. I can switch between loads of different color profiles for my display, but that won't change anything as Premiere i just ignoring it all? Everything except the playback in Premiere changes when i switch between color profiles.

      R Neil Haugen
      R Neil Haugen
      Legend
      April 25, 2018

      From everything I've been told, your Mac's monitor stays pretty much P3 ... which isn't something that PrPro works with.

      PrPro works in sRGB ... period.

      Unfortunately, that's not something you can get around ​other​ than as Jim suggests, having a separate monitor that can be set for sRGB and preferably run by an external box. Although one can get by with an external calibrated computer monitor of very good quality ... with the understanding ... that you need to constantly test your exports on a full b-cast setup TV monitor to have any confidence your color/tonal work is usable.

      Neil

      Everyone's mileage always varies ...
      E
      excited_Genie16B8
      Legend
      April 25, 2018

      I think Jamie LeJeune has it right in the following thread from the Blackmagic forums.  He's specifically talking about Resolve, but the idea holds true for all NLEs.  The upshot is, "The only image you can trust is to run SDI out to an accurately calibrated reference monitor."

      http://forum.blackmagicdesign.com/viewtopic.php?f=21&t=68410

      N
      Nösnäs MediaAuthor
      Participating Frequently
      April 25, 2018

      Well, it doesn't matter how calibrated my display is if Premiere can't handle the gamma. And that's where the problem is.
      No matter what gamma i chose my display to work in, Premiere will just ignore it

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