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HDR has absolutely nothing to do with True Tone except to say that with True Tone enabled you will obviously get a subtly different colour temperature. HDR simply refers to the colour gamut of the device and the difference in low-peak contrast (not brightness, as people misunderstand).


You guys have no idea what you’re talking about. True tone (white balance) has everything to do with HDR. Here’s a few links to give you some education. Without proper automatic white balance from Tru tone, hdr color will be way off or dull. If you want to maximize your viewing enjoyment of getting the brightest and most accurate color, leave true tone on.

http://www.pocket-lint.com/news/137264-what-is-apple-s-true-tone-display

https://digital-photography-school.com/setting-up-your-digital-camera-for-hdr-shooting/

 
You guys have no idea what you’re talking about. True tone (white balance) has everything to do with HDR. Here’s a few links to give you some education. Without proper automatic white balance from Tru tone, hdr color will be way off or dull. If you want to maximize your viewing enjoyment of getting the brightest and most accurate color, leave true tone on.

http://www.pocket-lint.com/news/137264-what-is-apple-s-true-tone-display

https://digital-photography-school.com/setting-up-your-digital-camera-for-hdr-shooting/


So my TV and every other HDR capable device is "way off"....?
 
off for me, the color shift was a bit to much. i'm pretty sure if I left it on I would have gotten use to it
 
Off. Way too yellow.
However, I keep it on, on the iPad Pro. Looks great.
 
I prefer mine off. I like the bluer tint, but I do use night shift and set that to as warm as possible.
 
So my TV and every other HDR capable device is "way off"....?
In general, yes. Most tv's are fairly accurate when it comes to rec709, when selecting Warm 2 as color temperature. However, HDR requires a wider color gamut. Rec2020. HDR TV's today can not fully meet rec2020 standards which is what DV HDR uses. Instead most HDR tv's today use DCI-P3 color gamut, which is wider than rec709, but not as wide as rec2020. If you have an HDR tv, you really need it to be professionally calibrated to get the most out of DCI-P3 gamut.

The vast majority of people use the wrong color temperature on their tv's. They prefer settings that are listed Cool, or Standard, which are way way off when it comes to correct color temperatures. if you go your tv settings, you might see Cool, Standard, Warm 1, Warm 2, Warm 3, etc. Warm 2 is usually the most accurate when it comes to SDR709 which is what everything but HDR is using. Most people find Warm 2 "too yellow", but is actually the most correct and the way white should look. Movies and tv shows are mastered using D65 and that is what Warm 2 is closest too.
 
What's strange is that it is much, much warmer than my 9.7" iPad Pro with True Tone on. On the iPad, it's a pretty subtle adjustment. On the phone, it is much yellower.
 
Both True Tone and Nightshift are settings for people who prefer a worse image, for everyone who likes better image quality from their device turn them off.
 
I prefer it on. There have been cases where I have perceived that the True Tone screen was warmer than it should be. However, in those cases, I compared a white piece of paper in the same light to the True Tone white color presented on the screen, and the True Tone white has always matched the naturally lit white paper perfectly. That demonstrated to me that the True Tone color adjustment was correct in matching the white balance of my environment. I think most people are so used to the daylight white of most prior phone screens, that a transition to a True Tone display seems jarring. I don't think most people understand what True Tone's function is.
 
I prefer it on. There have been cases where I have perceived that the True Tone screen was warmer than it should be. However, in those cases, I compared a white piece of paper in the same light to the True Tone white color presented on the screen, and the True Tone white has always matched the naturally lit white paper perfectly. That demonstrated to me that the True Tone color adjustment was correct in matching the white balance of my environment. I think most people are so used to the daylight white of most prior phone screens, that a transition to a True Tone display seems jarring. I don't think most people understand what True Tone's function is.

I agree 100%! I hear many complaining about the yellow screen, it’s probably because your lights in your room/house are yellow colored, or “incandescent” instead of fluorescent or white LED.
 
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