[Tig] P3-DCI to rec709

CarlSkaff.Colorist carlskaff.colorist at gmail.com
Thu Jun 16 13:50:50 BST 2016

So, by using a LUT that takes you most of the way... Would that LUT also 'convert' the white point? Resulting in that the TV will look closer to the DCI-whitepoint. Or should one not make the TV-white look like projector-white?

I mean.  The Projectors light source is greenish. And the tv light source is magentaish (strong words for it but you know what I mean) so one theory would be NOT to match it

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> 16 juni 2016 kl. 14:28 skrev Marc Wielage <mfw at musictrax.com>:
> "CarlSkaff.Colorist" <carlskaff.colorist at gmail.com> asked on the TIG:
> How should we transform a cinema graded project to TV
> in regards of the different whitepoints and gamma?
> ------------------------------------------------------------
> Use a LUT to get you most of the way there, and do a trim pass in the
> color correction system. The LUT alone will not work. The trim pass need
> only take a day or two. I also think there are things that visually change
> just inbetween (say) a 20¹ projector and a 30² or 40² flatscreen display.
> For that reason, my opinion is that you can¹t use a projector for a Rec709
> deliverable. I think you¹re better off using a calibrated flat-panel
> display to better approximate what the home viewer will see. I think
> projectors are mandatory for theatrical P3 releases, but you¹re going to
> chase your tail trying to figure out how it will look for streaming, pay
> TV, Blu-ray, syndication, and so on.
> --Marc Wielage
>  marc at colorbymarc.com

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