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Old 20th November 2021, 02:00   #6  |  Link
benwaggoner
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Join Date: Jan 2006
Location: Portland, OR
Posts: 4,750
In general you don't want to do math on PQ code values. They're even more nonlinear than gamma, and weird things happen.

Linear scaling of nits isn't that bad a way to adapt to brighter ambient light conditions, since PQ itself is defined relative to a 10 nit ambient. It's certainly better than trying to scale or add to PQ code values.
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