
Originally Posted by
razz16mm
The big difference is a much broader color gamut, well beyond what would clip in REC709. You would need a display solution, 10 bit video card or external HDSDI/ HDMI video encoder and an REC2020 rated true 10 bit display, even one of the newest high end OLED or HDR rated consumer TV's to be able to see what you are grading. REC2020 only applies to UHD TV formats.
REC2020 and REC709 are both display referenced color spaces, so if your grading display solution is only REC709 capable, that is what you are grading to as a reference even if you are working in a different color space.
Resolve lets you monitor and grade in REC709 but still deliver mathematically correct conversions to other color spaces like REC2020 or DCIP3, but your grades will only be visibly accurate for the range of color values that fall within REC709 limits.