Quote:
Originally Posted by bmick23
For reference, here are the scopes on the main "TITANIC" text titles at the beginning of the film, which are supposed to be white. In a properly balanced image, the levels would be on the same line.
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No, they would not be.
Your home theater output device is supposed to be calibrated to D65 (white point). Only if that's the white point you actually want to hit with your master, i.e., both are identical, then the lines should be identical.
If you want to emulate a projection print, then you do not want to hit D65.
Projected film - analog or digital, DCI-P3 as an example
here and in the Wikipedia
quote below - has a warmer white point, where the spectrum is shifted toward, you guessed it, green.
If that is emulated
correctly on a master made for a D65 calibrated device, then pure white isn't and shouldn't be {255, 255, 255}. Film print emulation LUTs take this into account.
Quote:
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DCI-P3 specifications are designed for viewing in a fully darkened theater environment. The projection system uses a simple 2.6 gamma curve, the nominal white luminance is 48 cd/m2 with the white point defined as a correlated color temperature of ~6300 K. It is incorrect to refer to this as "D63" as this white point is not a CIE standard illuminant, and is not on the Planckian locus. Instead, the white point is slightly greener. This resulted from optimizing for best light output with the xenon arc lamp projectors commonly used in theaters.
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