CemAygun
Captain
Philippines
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The HDR naming has always been a source of confusion, so here is a very simplified breakdown:
Standard dynamic range photo/video formats use 8 bits per color channel, creating a total of 256 shades between full black and full white (same applies to all colors, bringing the total to 16.7 million). Consumer grade camera sensors generally record at a dynamic range close to 2/3rds of that in a single exposure. So just to be able to make the full use of a regular, 8 bit video (or photo), you need to take multiple exposures of the same scene and join the best parts from each in post processing.
This used to be called "exposure bracketing", as each scene was recorded multiple times with normal, under and over exposed settings. But later the term "HDR" became preferred for multi exposure videos (or photos) as they provided a higher dynamic range than sensor's standard; albeit still being presented in 8 bit formats.
This was all good before displays that can show more than 8 bits became a consumer thing. When those came around, they were rightfully called HDR as they could display a higher dynamic range (10 bits instead of 8, thus 1024 shades between black and white instead of 256, and 1.07 billion colors in total). The videos recorded for those displays, with 10 bits per channel are also called HDR videos.
So now "HDR video" means two different things: One is a video that is composed from multiple exposures which gives an extended dynamic range over the sensor's standard, and the other one is a video that is recorded at 10 bits per channel instead of 8 (regardless of how much of that depth is utilized).
Pocket 2 is supposed to do the first one, using a special version of pixel binning. Basically when recording video every pixel in a 2x2 grid (out of the 64MP) is supposed to be exposed slightly different, some under and some over, and then processed in real time, in camera, to create higher dynamic range video.
The bottom line: The output not being 10 bits does not mean it is not HDR, as long as it provides a higher dynamic range than standart, single exposure video. And as I said, just filling up 8 bits is quite a challenge.
Hope this helps...
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