P3 DCI, HDR10, 10+, and Dolby Vision Grades

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Jay Strojnowski

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P3 DCI, HDR10, 10+, and Dolby Vision Grades

PostThu Apr 15, 2021 12:50 pm

I finished my REC709 grade recently for my own short film. I sent out the sound for the Atmos mix and I have it back from Ott House here in DC. I am attempting the P3 and HDR versions now, and all of these are a first.
I have reviewed the other 'P3' related posts. Hopefully I am going in the right direction:
I will attempt the P3 grade today. The purpose of the DCI P3 is to present in a theater. My grading tool can see all of P3 color.[u][u] So here is my question for P3... P3 is app. 35% larger than 709... so I could push the saturation out further into P3 space? Not sure I want to, and if I don't, then do I simply render out w/ P3 instead of REC709?[/u][/u]
I would assume I move on to HDR from that point.
Thanks as always guys.
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Jim Simon

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Re: P3 DCI, HDR10, 10+, and Dolby Vision Grades

PostThu Apr 15, 2021 1:47 pm

I would have gone the other way. Grade for the largest color space (Rec.2100) and change the ODT (in ACES) for the lesser spaces (P3, Rec.709).
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Dermot Shane

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Re: P3 DCI, HDR10, 10+, and Dolby Vision Grades

PostThu Apr 15, 2021 7:28 pm

chances are you will have little to gain, and some to lose in P3

i deliver for theatrical typicaly, and rare is the day where i want to push sat beyond 709 in any case

And one has to watch out for colataral damage, ie: stop signs lit by a red car tail ight becomeing super anoyingly visable for example

skintones are still skintones

i hope you are working in a callibrated gradeing theatre? without that i would stick with 709, and make a DCP from there, better a vewing chain that you can trust 200% than a mess, and useing a mon, any mon alone is not ideal for theatrical deliveries

at a minimum do a P3 pass with the best you have, make a DCP and screen in a local cinema, come back home and tweak, rinse-n-repeate as mach as you need to

good luck!
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Jay Strojnowski

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Re: P3 DCI, HDR10, 10+, and Dolby Vision Grades

PostWed Apr 21, 2021 10:39 pm

Jim, Dermot, thank you for your insights. I may well try high to low next time Jim. Dermot, I will hand carry a P3DCP to a local cinema.
Mac Pro 2019
16 Core/256GB RAM/1TB OS SSD/8TB Accelsior/Vega II Duo
FSI DM240 Grading Monitor/Apple XDR/LG4K Monitor/LGOLEDCX65 Client Monitor
BMD Control Panel Mini
BMD Decklink 4K, BMD Teranex 8K Mini
MacOS 10.15.7
DR16.2.8

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