Unacceptable Gamma shift when uploading to Vimeo from Permiere

[Matt Hannon]

Thanks to everyone for chipping in with advice.

I have had a lucky turn in project which although now means I am going to drop a bit more work into it, it also gives me a bit more time to get the colour issue sorted.

From what I can tell (and I do not claim to be a colour expert by any means), is like Christian mentioned in an earlier post, the new iMac are using a wide gammut colour profile known as P3, and premiere does not have this colour system/profile. It seems premiere overcompensates for the wide gammut and oversaturates the footage – it also seems that VLC might read the tags on the exported footage in the same way as premiere and displays it similarly.

I tried to change the display profile on the iMac, with major shifts of colour in the footage inside premiere along with the Premiere windows themselves (black backgrounds etc) – this is to be expected. What I didnt expect was for Premiere to automatically compensate for the display change after 1 second, and revert the footage to look exactly how it was before the change. If that makes sense..

Either way, i’m confused. Maybe I shouldn’t bother with Lumetri, it feels pretty limited anyway, but I loved the idea of being able to turn around the whole project inside premiere. It seems like premiere is falling behind without the ability to manage colour systems. In FCP you can apparently.

Another interesting result was that the firefox version of my vimeo video looked much closer to the graded images inside premiere (not perfect with much higher magenta, but at least closer), which makes me think it’s all a bit pointless anyway.. ha..

Either way, i’ve completed plenty of projects in the past and never experienced an issue like this with vimeo/premiere/mac…

Thanks again

The Road to Patagonia – A two year surfing odyssey – from the top of the world to the bottom

[Greg Janza]

One thing that hasn’t been mentioned is if you’ve fully calibrated your computer monitor/s.

If a professional monitor and i/o card such as a Blackmagic decklink isn’t in your budget you should at least pick up a calibration device like the x-rite x1 pro or a spyder and use the open source DisplayCAL to calibrate. Without calibrating your monitor you really can’t troubleshoot any color issues.

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[Matt Hannon]

Its got nothing to do with monitor calibration – everything is being viewed on the same monitor.

The Road to Patagonia – A two year surfing odyssey – from the top of the world to the bottom

[Tero Ahlfors]

It ain’t the answer you want but it doesn’t make it wrong.

[Matt Hannon]

happy to consider all options Tero, and i’m the first to admit i’m not a colorist.

Would you mind explaining to me how the calibration of my one screen is affecting all the different players/browsers/apps being viewed on it?

It seems to me that if it was just a callibration issue, then I wouldn’t be experiencing the variations across the different platforms.

[Matt Hannon]

For anyone that might read this thread, here’s the most succinct explanation about why the new iMacs are causing hassles for PP users https://rnaphoto.com/how-to-color-grade-premiere-pro-projects-if-you-bought-a-new-5k-i-mac/

Get with the times Premiere!

The Road to Patagonia – A two year surfing odyssey – from the top of the world to the bottom

[Sebastian Leitner]

your problem is colorsync in apple’s retina p3 displays: i made a video about it (AND THE SIMPLE SOLUTION!), you can also read up on the details on my website (all in the description of the video): https://www.youtube.com/watch?v=YwjLuUR51gE

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