Banding when using Display Color Management

You should "join" the LiftGammaGain forum, a pro post-processing forum heavily attended by colorists and some major tech/software brains like Steve Shaw.

The discussions on many things especially calibration and monitor questions tend to be long and detailed. Also very informative.

And fun at times.

Glad to hear the gamma change works of course!

Neil

I like the way you're testing things, that's a good process.

I do have one quibble ... video should never be considered straight "photo" sRGB. Video sRGB standards involve both the camera or "scene-referred" gamma, and the display-referred gamma ... creating essentially an expected result of gamma 2.4. That is what nearly all pro colorists set for, as that is the broadcast and streaming standard. Period.

For "bright viewing environment" expectations a gamma of 2.2 will work fine, and some prefer it. Most colorists I know simply deliver everything that isn't HDR (and there's not that much delivered pro in HDR yet) in Video sRGB/Rec.709/gamma-2.4/100-nits-brightness according to b-cast standards.

Steve Shaw of LightIllusions calibration software has many "white papers" on their site concerning proper setup for monitor calibration and use. I do suggest people try and wind their way through them as there's a mountain of information there.

Have you done a puck/software calibration of your monitors, or simply using a software calibration regime? The later of course doesn't tend to be nearly as accurate. As far as say colorists would count "accurate".

Neil

In a properly setup room, darkened (NOT blackended!) with a bias light, I can barely tell the difference between 2.2 and 2.4 on the monitor. Given that once it goes Into The Wild, you have no control ... someone will be on a phone in bright sunlight and another on a super-bright screen in a dark room ... that tiny difference is pretty much a non-worry.

I do wonder about your monitor ICC profile and calibration and/or settings. I can't replicate this. And what EDCM does is make Premiere look at the monitor ICC profile used by the OS, and set accordingly.

I know a lot of folks using EDCM, and haven't seen this elsewhere. Which leads me to posit that something in your screen setup isn't exactly spot-on. Monitor settings, calibrations, profiles, ICC profiles (separate from monitor profiles) ... it's enough that colorists have LONG threads on sorting out the issues. It's really very easy to have something "off".

Neil

I work with colorists regularly. Their comments in such situations is the with computer screens the difference between 2.2 and 2.4 won't bexany more if as much as the variations across the screen itself. One of the main reasons for getting a pro broadcast monitor being to get that reliable uniformity.

I run a full calibration via i1 Display Pro and check by running a profile with Lightspace/Resolve connected to check my calibration. I'm a bit banal about it.

But still, with your gear, I would not expect a really notable difference between 2.2/2.4. I would leave the EDCM off and get the work out.

The display differences screen to screen out in the wild are all going to be far more dramatic than this.

Neil

What gamma is the monitor providing, either by setting or 'native'?

If it's either 2.2 or 2.4, I'd just leave the EDCM off.

Neil