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Re: Grading adjustment in Resolve for DCP creation

COW Forums : DaVinci Resolve

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Chris MartinRe: Grading adjustment in Resolve for DCP creation
by on Apr 23, 2012 at 5:06:14 pm

JC,

Are you making the actual DCP yourself or is another facility? If another facility is doing it then you should talk to them as it may be as simple as delivering them grading media and identifying that the working viewing environment was 709. The facility probably already has a process to transform the 709 to a DCP color environment (xyz, gamma 2.6).

If you are making the the DCDM yourself, which means creating a specific deliverable that is prepped for making a DCP, then as someone else has pointed out then you'll need to use a LUT that properly transforms the project from one graded in a rec709 to one that accounts for the xyz color space of DCP. This transform LUT when properly used will compensate for both the xyz color as well as the change from 2.2 to 2.6 gamma environment. The great thing is this is all math and you don't need to do any regrading to account for anything assuming you've been grading in a well calibrated rec709 environment and you are using a proper rec709toXYZ LUT. I know Resolve comes with a standard RGB to XYZ LUT but have not tried this one out.

Also if you're doing a DCDM, make sure you are also delivering media that fits proper DCDM specs. We do 16bit tifs, converted to xyz color, and usually resolution will be 1998x1080 - 1.85 ratio (unless anamorphic). This means if you are working 1920x1080 you have a decision to make to either protect aspect ratio and box the 1920x080 in 1998x1080 canvas or crop top and bottom.

Still, if a facility is doing the DCP then there's a good chance they could do all the above.


Cheers, Chris


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