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Setting Up Color Management for Dolby Vision Mastering
For an HDR signal to look correct, you need to output your graded program using the right EOTF for the HDR standard you’re mastering. The EOTF maps the different levels DaVinci Resolve outputs to your HDR display using the SMPTE ST.2084 PQ setting required for outputting Dolby Vision. You can set this up in one of three different ways, as:
— Output Color Space and Gamma settings in RCM or ACES
— Color Space and Gamma settings within a series of Resolve FX Color Transform plugins that can be used at the end of each grade or at the end of a Timeline grade
— 3D LUTs used for converting signals from one standard to another that can be used at the end of each grade or at the end of a Timeline grade
While Dolby Vision content is not limited to a particular color space, Resolve Color Management provides a P3 D65 setting that matches the capabilities of most mastering displays in use at the time of this writing.
Choosing Mastering Displays for Dolby Vision
To do HDR grading, you need a suitable HDR display. Technically any monitor that supports SMPTE ST.2084 (aka PQ) will work. Happily, a growing number of professional displays from Sony, Flanders Scientific, TV-Logic, Canon, and Eizo are suitable for use in HDR grading suites. EBU Tech 3320 specifies the requirements for a Grade 1 HDR mastering monitor. Dolby recommends the following minimum requirements for HDR monitors:
— A minimum Peak Luminance of 1000 nits
— A 200,000:1 contrast ratio
— Minimum black at 0.005 nits
— Capable of at least 99% of P3 gamut
For more information on Dolby best practices for color grading Dolby Vision, visit: https://www.dolby. com/us/en/technologies/dolby-vision/dolby-vision-for-creative-professionals.html.
Using the Dolby Vision Internal Content Mapping Unit (iCMU)
DaVinci Resolve has a GPU-accelerated “internal” software version of the Dolby Vision CMU (Content Mapping Unit) for previewing Dolby Vision mapping right in DaVinci Resolve. iCMU support can be enabled and set up in the Color Management panel of the Project Settings by turning on the Enable Dolby Vision checkbox. This is a DaVinci Resolve Studio-only feature.
Dolby Vision settings in the Color Management panel of the Project Settings