Jos leffan / sarjan max masterointi kirkkaus on luokkaa 1000nits tai alle (tyyliin uusin Blade Runner) niin eroja ei tosiaan hirveästi ole esim. HDR10 vs DV. Jos taas katsotaan leffaa missä kirkkaudet ovat jopa 10 000nits (kuten uusin Mad Max) niin Dolby Visionin paremmin toteutettu tonemäppäys dynaamisine metadatoineen on kyllä silminhavaittavasti parempi.
Whether to use Dynamic Tone Mapping, I would say it's all about what you are watching.
Whether to use Dynamic Tone Mapping, I would say it's all about what you are watching.
- For movies which are mainly mastered for 1000 nits, there is no need for Dynamic Tone Mapping. You get then maximum fidelity - what director wanted it to look like. The best example is Blade Runner HDR10 bluray disc, which has maximum nit value close to 700, which is within TV capabilities. If you use DTM there, you will get picture, which is too bright on most scenes - as unfortunately it brightness the picture where it sees that HDR is not used to full extent of TV capabilities and only darkens the picture, when bright details are lost. In this scenario whether to use it or no is purely personal preference - either you want maximum fidelity, or get mostly brighter picture and more wow hdr effect.
- For shows that have more brighter picture or are mastered in 4000 nits or 10000 nits picture might look too dark without dynamic tone mapping, as a lot of screen will have high nit values which can't be displayed by the TV, so the TV internally will start mapping down all the picture. Dynamic Tone Mapping then helps stop that process and map tones dynamically to 800 nits max. Therefore, it almost necessary to use it on that kind of show to get proper HDR effect, brightness levels and colors close to directors intend.
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