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Alexander Eberhard
Alexander Eberhard
Inspiring
May 21, 2017
Answered

Working in Rec709 with 10 bit

  • May 21, 2017
  • 3 replies
  • 6042 views

Gday,

I am running a EVGA GTX 1060 FTW+ active with an EIZO CS2730. I need to set up two things:

1. Have a 10 bit workflow

2. Set up a correct rec709 color space to work in

Is anyone experienced in that workflow? I am using my system for video editing and color grading within premiere pro CC 2017. I am running windows 10 pro with the latest nvidia driver.

Does my graphic card support 10 bit? Only the displayport?

Also what are the correct rec709 values? EIZO ColorNavigator software does not realy have a rec709 preset installed so I found this:

Rec. 709 Reference Display

Is that the correct one?

I run through the calibration process with ColorNavigator and SPYDER 5 PRO. Looks fine so far. But did I use the correct profile or shall l calibrate manually? But where do i get the correct color profile settings? There are some discussion about the correct gamma or 2.2 or 2.6 and other values which is a bit confusing.

Really appreciate some advise. Thanks, Alex

This topic has been closed for replies.
Correct answer RoninEdits

i don't have that monitor to say exactly how, but the idea of setting up the monitor goes like this: use calibration software to build a corrected color space profile specific to your monitor, such as a rec 709 profile, so it can correctly display that color space. then that profile can either be loaded/saved directly into the monitor, or if the monitor doesn't support that, then save the calibrated profile as a windows color management monitor profile.

i'm not sure what that website rec709 profile is for, but it sounds like the wrong thing. either the eizo color navigator (or whatever calibration software they have) or perhaps sypder 5 pro software from their website will have a rec709 display format choice. if your eizo monitor has an option in its menu, or a button, to switch color space modes, like between srg or rec709 etc, then you might just need to be on the rec709 mode and have it calibrate itself. using a pre-made rec709 profile alone won't correct any color shifts or brightness levels specific to your monitor. srgb is very close to rec709, but i think it defaults to 2.2 gamma.

supposedly adobe software requires a quadro card to send 10-bit to the display monitor, or a video i/o card. blackmagic has some starting for around $200, and there are some quadro cards that start around $200 too. the display i/o cards do not function as a gpu, so they don't use windows monitor profiles. so the monitor would have to support a calibration profile to handle adjustments, but this also removes the chance of windows interfering with the monitor display via a windows monitor profile. a quadro card would allow for a windows monitor profile to be used, but can be a bit tricky to get the quadro + geforce drivers installed for both cards. you also have to setup the nvidia control panel to tell premiere to only use the gtx 1060 for cuda, so the quadro won't slow it down and will only be for display.

i'm not sure about the best/correct gamma, it seems like its not a locked down spec of rec709 and changes depending on the monitor and mfg. i've seen 2.2-2.6, so perhaps 2.4 is a good middle ground. you also need to have the lighting in your room match the destination lighting, such as a dark room for a theater, or several lights for average home tv viewing.

3 replies

erike35838767
erike35838767
Participant
February 19, 2018

Thanks for reporting on your investigation Alexander, I too have an Eizo but sending signal through Black magic for 10bit.

Just want to add that I think that gamma 2.2 is the standard for computer monitors and therefore web videos, 2.4 for broadcast TV, and 2.6 for cinema. This due to the common light environments we have when we are in a bright lit office, back home in duller light watching TV or in a dark room for cinema.

Best //Erik

Alexander Eberhard
Alexander EberhardAuthor
Inspiring
May 24, 2017

I would really like Adobe to take a word here please Kevin-Monahan

The question is will my GTX 1060 10 bit signal that is working in Windows via nvidia panel also been passed through premiere pro? I see now reason why that should be blocked?

Also I just found this statement:

"keep in mind, 1070/1080gtx will only output 10 bit in directx. premiere uses opengl so only 8 bit in there, in case you're wondering." true?

RoninEdits
RoninEditsCorrect answer
Inspiring
May 21, 2017

i don't have that monitor to say exactly how, but the idea of setting up the monitor goes like this: use calibration software to build a corrected color space profile specific to your monitor, such as a rec 709 profile, so it can correctly display that color space. then that profile can either be loaded/saved directly into the monitor, or if the monitor doesn't support that, then save the calibrated profile as a windows color management monitor profile.

i'm not sure what that website rec709 profile is for, but it sounds like the wrong thing. either the eizo color navigator (or whatever calibration software they have) or perhaps sypder 5 pro software from their website will have a rec709 display format choice. if your eizo monitor has an option in its menu, or a button, to switch color space modes, like between srg or rec709 etc, then you might just need to be on the rec709 mode and have it calibrate itself. using a pre-made rec709 profile alone won't correct any color shifts or brightness levels specific to your monitor. srgb is very close to rec709, but i think it defaults to 2.2 gamma.

supposedly adobe software requires a quadro card to send 10-bit to the display monitor, or a video i/o card. blackmagic has some starting for around $200, and there are some quadro cards that start around $200 too. the display i/o cards do not function as a gpu, so they don't use windows monitor profiles. so the monitor would have to support a calibration profile to handle adjustments, but this also removes the chance of windows interfering with the monitor display via a windows monitor profile. a quadro card would allow for a windows monitor profile to be used, but can be a bit tricky to get the quadro + geforce drivers installed for both cards. you also have to setup the nvidia control panel to tell premiere to only use the gtx 1060 for cuda, so the quadro won't slow it down and will only be for display.

i'm not sure about the best/correct gamma, it seems like its not a locked down spec of rec709 and changes depending on the monitor and mfg. i've seen 2.2-2.6, so perhaps 2.4 is a good middle ground. you also need to have the lighting in your room match the destination lighting, such as a dark room for a theater, or several lights for average home tv viewing.

Alexander Eberhard
Alexander EberhardAuthor
Inspiring
May 22, 2017

Thanks mate!

I had a long phone call with EIZO today. They offer superb support.

What I have now addressed the rec709 within the calibration software and did some manuel setting to gamma of 2.4 and brightness to 100 instead of 80cd. Some ppl even recommand 120. But since I am most working at night and a dark room 120 is simply to intense for my eyes. Actually the gamma value has been adopted to 2.4 since the new UHD format and digital cameras have been around. Cant really nail that one down. Lots of opionion.

The 10bit should be working with a GTX card. I will try a DP cable tomorrow, keeping my fingers crossed and let you know. 10 bit is not available yet but should be with the cable.

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