4 ms·

What are the risks of doing this? I would love to ramp up the nits for outside work, but presumably it's been limited to 500 nits for SDR for a reason.

by jordn 5y ago

alin23 5y ago
If used for long periods of time, the LEDs will definitely heat up and decrease the lifespan of the display. By how much, it is impossible to know. But 2 things should be considered: 1. If most of the screen is not full bright white, (e.g. white text on dark background), then LEDs will have plenty of time to cool down 2. macOS has hard temperature thresholds, and limits the brightness when the display gets too hot: https://www.pcmag.com/news/apple-xdr-displays-limit-brightness-when-its-hot https://www.pcmag.com/news/apple-xdr-displays-limit-brightne...
- magicalhippo 5y ago
  > 1. If most of the screen is not full bright white, (e.g. white text on dark background), then LEDs will have plenty of time to cool down Note that the display is not an OLED display, but a regular IPS LCD with local dimming zones for the backlight[1]. Thus only the dimming zones not covered by white text would get to cool off. This also points to another downside of pushing up the nits: it will likely increase the bleed-through of the backlight, driving up the black level especially in white-text-on-black scenarios. [1]: https://www.apple.com/pro-display-xdr/specs/ https://www.apple.com/pro-display-xdr/specs/
  - alin23 5y ago
    Yea, bleed-through is annoying. But when used in direct sunlight, it’s hardly noticeable.
deleted 5y ago
[deleted]
randyrand 5y ago
They added this 500 nits limitation to always leave room for HDR, so that SDR and HDR "coexist" properly. But it looks terrible imo I think they failed on that front. Also they want HDR to be a selling point. Not many phones take HDR videos and images. "It goes brighter" is what makes HDR pop.
- api 5y ago
  I have a Samsung monitor that does this too, but it has an override in its menus. In normal mode it’s stupidly dim. HDR looks like shit, so I just want SDR with proper brightness.
  - randyrand 5y ago
    I never thought I would dislike HDR, but Somehow companies are managing to make it a terrible experience on PCs (macs included).
    - api 5y ago
      It always looks washed out. Is it perhaps only for certain games or image/video editors that support it properly? Or does the support overall just suck?
- orlp 5y ago
  I never thought this would become relevant in a context like this, but here it is, and it is painfully relevant: https://www.youtube.com/watch?v=uMSV4OteqBE https://www.youtube.com/watch?v=uMSV4OteqBE
- ricardobeat 5y ago
  What makes it look terrible? The majority of consumer displays max out at 300-400 nits. This is the whole point of HDR, webpages are not designed with “sunlight-white” intended for the background.
  - buildbot 5y ago

What are the risks of doing this? I would love to ramp up the nits for outside work, but presumably it's been limited to 500 nits for SDR for a reason.

by jordn 5y ago

What are the risks of doing this? I would love to ramp up the nits for outside work, but presumably it's been limited to 500 nits for SDR for a reason.

alin23 5y ago

If used for long periods of time, the LEDs will definitely heat up and decrease the lifespan of the display. By how much, it is impossible to know. But 2 things should be considered: 1. If most of the screen is not full bright white, (e.g. white text on dark background), then LEDs will have plenty of time to cool down 2. macOS has hard temperature thresholds, and limits the brightness when the display gets too hot: https://www.pcmag.com/news/apple-xdr-displays-limit-brightness-when-its-hot https://www.pcmag.com/news/apple-xdr-displays-limit-brightne...

magicalhippo 5y ago
> 1. If most of the screen is not full bright white, (e.g. white text on dark background), then LEDs will have plenty of time to cool down Note that the display is not an OLED display, but a regular IPS LCD with local dimming zones for the backlight[1]. Thus only the dimming zones not covered by white text would get to cool off. This also points to another downside of pushing up the nits: it will likely increase the bleed-through of the backlight, driving up the black level especially in white-text-on-black scenarios. [1]: https://www.apple.com/pro-display-xdr/specs/ https://www.apple.com/pro-display-xdr/specs/
- alin23 5y ago
  Yea, bleed-through is annoying. But when used in direct sunlight, it’s hardly noticeable.

deleted 5y ago

[deleted]

randyrand 5y ago

They added this 500 nits limitation to always leave room for HDR, so that SDR and HDR "coexist" properly. But it looks terrible imo I think they failed on that front. Also they want HDR to be a selling point. Not many phones take HDR videos and images. "It goes brighter" is what makes HDR pop.

api 5y ago
I have a Samsung monitor that does this too, but it has an override in its menus. In normal mode it’s stupidly dim. HDR looks like shit, so I just want SDR with proper brightness.
- randyrand 5y ago
  I never thought I would dislike HDR, but Somehow companies are managing to make it a terrible experience on PCs (macs included).
  - api 5y ago
    It always looks washed out. Is it perhaps only for certain games or image/video editors that support it properly? Or does the support overall just suck?
orlp 5y ago
I never thought this would become relevant in a context like this, but here it is, and it is painfully relevant: https://www.youtube.com/watch?v=uMSV4OteqBE https://www.youtube.com/watch?v=uMSV4OteqBE
ricardobeat 5y ago
What makes it look terrible? The majority of consumer displays max out at 300-400 nits. This is the whole point of HDR, webpages are not designed with “sunlight-white” intended for the background.
- buildbot 5y ago