A Few Thoughts On True Tone

Back when I received the 9.7" iPad Pro I published some of my thoughts regarding the True Tone display technology. And while I won't really be going over the topic in great detail again, I do have some additional thoughts on the technology after having using the new iPad Pro for quite some time.

Something I wanted to clarify from my original article is the purpose of my greyscale measurements. Some readers interpreted it as evidence that True Tone didn't work as intended. In actuality True Tone works exactly as intended by providing good relative accuracy. As you move to different environments the color temperature of the display shifts to match how your eye adjusts its perception of white depending on the temperature and brightness of the light around you. This obviously leads to inaccuracy relative to the sRGB standard, but that's missing the point of True Tone entirely. My tests were simply meant to demonstrate how much shifting occurs in different environments, along with a clarification on some misunderstandings I had heard regarding the relationship between True Tone and the DCI-P3 gamut, which are really unrelated technologies.

True Tone works very well, and in a way Apple has proven me wrong here because I was initially skeptical. I've seen this attempted before, particularly by Samsung, and the implementations have not been good at all. When I first got the 9.7" Pro I felt like the True Tone mode shifted too far toward the red. However, after using it for some time I began to realize that this was the product of me using other devices that all shift toward blue, which ruined my perception of the display. When using the iPad Pro on its own for reading or doing work, pulling out another device with a blue shifted display is absolutely jarring, as the iPad has adjusted to match how my eyes perceive things in different lighting, while all my other displays are forever blue. In a way, the biggest problem with True Tone is that it's not in everything, and I think this is something Apple should be bringing to all of their portable devices. 


Apple's Simulated True Tone Image

It's difficult to photograph True Tone, as depending on where your camera's white balance lands the iPad Pro will look too red, or the other display will look too blue. I really recommend checking out True Tone for yourself, although if you decide to do it in an Apple Store you probably won't see the benefits because Apple's other products are designed to look neutral under the same sort of fluorescent lighting as those stores. If you have a chance to try the 9.7" iPad Pro outdoors or somewhere with warmer lighting I think you'll see why this tech is one of the small things that nobody really asks for, but everyone appreciates once they have it.

Display Analysis: Uniformity Camera Performance
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  • Shadowmaster625 - Wednesday, June 1, 2016 - link

    So this thing really does outscore AMD's top end FX-9590 in kraken 1.1? Reply
  • bernstein - Wednesday, June 1, 2016 - link

    very interesting! in other words: it's almost half the speed of intel's top end i7 6700K in kraken 1.1...
    ...but in WebXPRT it's 200 vs. 3000 points...

    So what's the more realistic results?
    Reply
  • bernstein - Wednesday, June 1, 2016 - link

    i7 6700K: http://www.anandtech.com/show/9483/intel-skylake-r... Reply
  • tuxRoller - Wednesday, June 1, 2016 - link

    That score of 3000 is..I don't know, but a 2015 xps 15 scores around 440.
    So, about twice as fast as the Apple soc, but with better process, higher power budget and much larger tdp (given that it's in a full size laptop).
    Stoked
    Apple's doing an amazing job with their cpus. If they actually spent the die budget to enable smt they'd be right up there with core m.
    Reply
  • tuxRoller - Wednesday, June 1, 2016 - link

    http://principledtechnologies.com/benchmarkxprt/we... Reply
  • michael2k - Wednesday, June 1, 2016 - link

    More interesting to compare it to a
    http://www.anandtech.com/show/10000/who-controls-u...

    Carrizo is essentially Atom class and it's predecessor, Kavari, is found inside the PS4 and XB1, albeit with a more powerful GPU and an additional 4 cores. So if you can imagine a 4W processor competing with a 65W CPU:
    http://www.anandtech.com/show/10000/who-controls-u...

    That leaves about 50W for Apple to integrate, say, a Pascal GPU if they really wanted to create something incredibly powerful.
    Reply
  • mdriftmeyer - Wednesday, June 1, 2016 - link

    You are high if you compare a 4 core Excavator to an Atom. Reply
  • 255BB - Thursday, June 2, 2016 - link

    PS4 and Xbox one use Kabini not Kaveri. A 4 cores Kabini has a 15W TDP.
    Carrizo is not an Atom class .Its TDP is 15-35W (Carrizo-L is Atom class)
    Reply
  • Meteor2 - Thursday, June 2, 2016 - link

    Perhaps the same *performance* class. Not power class. Reply
  • michael2k - Thursday, June 2, 2016 - link

    Right. So take a 4W SoC that currently has two cores and bump it up to 8. An A9X at 2GHz and 8 cores might take 15W. Throw in a Pascal GPU and now you're 35W, or 65W, depending on compute cores.

    On single thread performance we see the A9 is between Atom and Core at the same clock. That means it is also at the same performance level as Kaveri and Kabini.
    Reply

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