Barney87 wrote:You shouldn’t be reviewing grades in Quicktime. It is not color managed and will not display colour accurately.
Sent from my iPhone using Tapatalk
It is the opposite.
Most video players and Resolve viewer are not color managed, they output image as is.
Resolve have checkbox in preferences "Use Mac Display Color Profile for Viewers" in this way it can match QTX output. But it is limited and works only if your timeline set to Rec709.
You can also calibrate Resolve viewer with hardware calibrator and build your own unique output LUT that will transform output to Monitor profile.
QT X (only X) is color managed video player. It can read metadata from video files and transform it to monitor color space. But QT it makes it in its own way. From my opinion it makes color management "wrong" and always washes shadows in very strange way compare to other color managed apps.
Because HDR, Rec2020 and Wide gamut displays became popular more and more players became color managed. Last version of VLC player seems also color managed now, but probably it transforms video gamma and color to monitor color space different than QT X. Same goes to other Apple Pro apps.
Adobe apps are also different.
It is 2018 ant there is huge problem with system wide video (and partially image) color management unification. Content is still looks very different in different apps, different browsers and different OS. Every large company makes it's own "unique" color space transform methods and rules

Bad future.