ACES space, BMCC ProRes and Resolve?

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Jules Bushell

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ACES space, BMCC ProRes and Resolve?

PostTue Sep 03, 2013 4:33 pm

Hi,

I want to try the ACES colour space in Resolve with BMCC footage shot in ProRes. I notice that for the input transform there is CinemaDNG which is fine if shooting in RAW. What would be the necessary selection for BMCC ProRes footage?

Thanks for any help,
Jules
Jules Bushell
url: www.nonmultiplexcinema.com
url: www.filmmeansbusiness.com
url: www.blurtheline.co.uk
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waltervolpatto

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Re: ACES space, BMCC ProRes and Resolve?

PostTue Sep 03, 2013 6:14 pm

... in ProRes you have to find the best conversion (a custom ITD if you wish) and use that as input LUT upon load the material. The only practical experimental way to do that is to shoot a bunch of test charts, make a prores with default debayer setting, go from raw to ACES under debayer setting, export ACES from resolve to Nuke in EXR, then compare the ProRes (in the current colro space with no conversion) to the linear photometrical ACES EXR file, find the curve that best represent the gamma and the primaries matching for the color saturation, once you have a good match, deliver a 33x ninimum LUT that you load in resolve and apply that as "custom IDT" in the media manager page.

In other words: either you do raw and ACES, or you don't....

InB4JouCanJustColorComment: Yes you can, good luck with that....
W10-19043.1645- Supermicro MB C9X299-PGF - RAM 128GB CPU i9-10980XE 16c 4.3GHz (Oc) Water cooled
Decklink Studio 4K (12.3)
Resolve 19.0 / fusion studio 19
GPU 3090ti drivers 512.59 studio
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Jules Bushell

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Re: ACES space, BMCC ProRes and Resolve?

PostTue Sep 03, 2013 11:56 pm

waltervolpatto wrote:... in ProRes you have to find the best conversion (a custom ITD if you wish) and use that as input LUT upon load the material. The only practical experimental way to do that is to shoot a bunch of test charts, make a prores with default debayer setting, go from raw to ACES under debayer setting, export ACES from resolve to Nuke in EXR, then compare the ProRes (in the current colro space with no conversion) to the linear photometrical ACES EXR file, find the curve that best represent the gamma and the primaries matching for the color saturation, once you have a good match, deliver a 33x ninimum LUT that you load in resolve and apply that as "custom IDT" in the media manager page.

In other words: either you do raw and ACES, or you don't....

InB4JouCanJustColorComment: Yes you can, good luck with that....

Thanks Walter,
Seems complicated. I think I may need a beer.

Jules
Jules Bushell
url: www.nonmultiplexcinema.com
url: www.filmmeansbusiness.com
url: www.blurtheline.co.uk
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waltervolpatto

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Re: ACES space, BMCC ProRes and Resolve?

PostWed Sep 04, 2013 12:47 am

yep... if you do not start with ACES in mind, is a bit complicate to make it right.

Yes you can just slap and color... but that is not "right" per se, is just a slap and fit approach...
W10-19043.1645- Supermicro MB C9X299-PGF - RAM 128GB CPU i9-10980XE 16c 4.3GHz (Oc) Water cooled
Decklink Studio 4K (12.3)
Resolve 19.0 / fusion studio 19
GPU 3090ti drivers 512.59 studio

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