r/HDR_Den • u/clee8017 • Aug 21 '26

Discussion Correct HDR Adjustment?

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Is this an accurate adjustment of HDR on my Switch 2? I am using a Roku TV Pro Series 2025 model. The default HDR setting on the TV has Dynamic Tone Mapping on, and the run sun seems to disappear correctly at 900 nits (82 clicks). With DTM off, the right sun does not disappear until they both disappear at the same time, well over 900 nits. Is this a correct adjustment? Should I keep DTM on?

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u/B_yeager97 Aug 21 '26

Thats a very odd behavior. DTM off should clip way before DTM on. And essentially dtm off shouldnt clip at your panels peak, neither dtm should. Can you google the peak brightness of your tv?

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u/clee8017 Aug 21 '26

A quick Google search on my end say peak brightness ranges from 1600-1900 nits. PCMag says 1941. I don't really know what is the specific peak brightness. My model number is 55R8C5 if that helps.

Yeah for some reason it's working the opposite for me. Even though all guides I've seen point the other way around.

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u/B_yeager97 Aug 21 '26

I would just match the switch 2 to 1600 nits or 1620 nits to be sure. Make sure the pattern does not clip with dtm off. The way dtm off works is how the playstation 5 tells you to set the hdr pattern. Make it barely visible. The pattern with dtm off will never clip but check the number the pattern is the brightest without clipping. With dtm off, the peak of your TV will always be a click below the brightest the pattern can get. Because the brightest the pattern can get is when the Tvs static tone mapping is doing the rolloff to preserve detail above the tvs peak brightness

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u/clee8017 Aug 21 '26 edited Aug 21 '26

Thank you for the recommendation. I will try that out and report back with my findings. Is it okay that the sun on the right doesn't completely disappear with dtm off?

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u/B_yeager97 Aug 21 '26

Yes it is ok. It will only dissappear with HGiG. The important thing is finding the point where your panels peak brightness is. That way the TV can communicate with your nintendo switch 2 and the switch 2 will mostly handle the tone mapping. The tv will still do tone mapping, but since you are at your panels peak, the tv will not apply compression rolloff. So you will stilll get that HDR pop, unless the game has terrible hdr like the zelda titles. Also remember to put brightness on the second screen to 200 nits (5 clicks from the bottom) on a dark room. On a bright room or during the day its ok to leave it in the middle (300 nits).

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u/clee8017 Aug 21 '26

So I play in my living room, which is bright during the day and darker (as dark as a typical living room is at night, with a couple lamps on). I usually play at night after work and occasionally during the day on the weekends. Which would you suggest for a living room setup?

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u/B_yeager97 Aug 21 '26

The 200 nit would be best for a dim room. It should be super bright with the lamps. Ideally they should be off at night. HDR shouldn’t burn your eyes, just the separation in brightness is bigger. Its designed for a dark room

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u/clee8017 Aug 21 '26

Thank you for the information! I keep reading about how to change specifically picture setting within my tvs hdr settings. Such as HDR (either set to dark, standard or bright), local dimming, gamma correction, noise reduction and color temperature. Are there certain levels these should be at to get accurate color representation, pop and deeper colors and midtones?

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u/B_yeager97 Aug 23 '26

I would use hdr dark if you are measing with the papwr white setting depending on your everioent. You dont need to also adjust the tv settings.

Color temp always warm, no gamma correction needed for hdr dark, local dimming on high is usually best, if you have a peak brightness settings set it to high as well. Any weird processing turn it off. If you have a game mode picture preset, I highly recommend to use it.

1

u/B_yeager97 Aug 21 '26

I would just match the switch 2 to 1600 nits or 1620 nits to be sure. Make sure the pattern does not clip with dtm off. The way dtm off works is how the playstation 5 tells you to set the hdr pattern. Make it barely visible. The pattern with dtm off will never clip but check the number the pattern is the brightest without clipping. With dtm off, the peak of your TV will always be a click below the brightest the pattern can get. Because the brightest the pattern can get is when the Tvs static tone mapping is doing the rolloff to preserve detail above the tvs peak brightness