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Old 2nd February 2019, 17:45   #54566  |  Link
Alexkral
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Join Date: Oct 2018
Posts: 319
Quote:
A final issue with a lot of displays, specifically home TVs, is the manufacturers deliberately deviating from the HDR specification, in an attempt to generate what they view as 'better' images.

This obviously means the same source footage will be seen very differently on different displays, even if the displays are defined as being 'calibrated'.

However, this issue is actually something we have sympathy for, because as mentioned previously above, the PQ HDR specification is flawed, as the standard is 'absolute', and includes no option to increase the display's light output to overcome surrounding room light levels. The result is that in less than ideal viewing environments, where the surrounding room brightness level is relatively high, the bulk of the HDR image will appear very dark, with shadow detail potentially becoming very difficult to see.

Many home TV manufacturers therefore deliberately 'distort' the PQ HDR EOTF (gamma curve) to attempt to overcome this issue.
https://www.lightillusion.com/uhdtv.html
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