Sigma fp: What's the Point of 12bit DNG RAW? One is True HDR Video

Started 3 months ago | Discussions thread
xpatUSA
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Re: Sigma fp: What's the Point of 12bit DNG RAW? One is True HDR Video

Markr041 wrote:

A "true" HDR video is a video with an extended color gamut and more color gradations - more colors - and greater dynamic range compared with standard definition (REC709, 8bit), which characterizes almost all monitors and TV's and video shot by most cameras. 12bit DNG RAW clips have the extended color gamut (REC202), and more color gradations (12bit) ...

It's "Rec. 2020".

But what percentage of people here own output devices that have the Rec. 2020 primary colors of 630 nm for the red, 532 nm for the green, and 467 nm for the blue?

https://en.wikipedia.org/wiki/Rec._2020

...and the full dynamic range and resolution of the sensor (12.5 stops versus the standard of about 6).

My cheapish NEC sRGB monitor is capable of 1000:1 real contrast, just under a DR of 10EV, my SD9 had a measure DR of 9EV (Bill Claff), so where does "the standard" of 6EV come from? Please explain ...

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Are you familiar with "just noticeable color difference"?

https://en.wikipedia.org/wiki/Color_difference

Discerning a 1-bit difference in 8-bit sRGB is virtually impossible, so how would anyone appreciate the "more color gradations" in 12-bit that you are promoting above?

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