Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

JohnHerzog

macrumors member
Original poster
Nov 16, 2021
73
38
The maximum brightness output for the new Macs is 1000 nits sustained and 1600 peak. The caveat is that this brightness threshold is only attainable whilst viewing HDR content - That means the rest of the computer's interface is capped at the previous threshold of 500 nits from earlier-generation machines. This poses the question: How do you achieve the 1000-nit sustained brightness output capacity for SDR content on the MacBook Pro?
 
  • Haha
Reactions: metapunk2077fail
It is really simple: you cannot.
For all SDR content the maximum brightness will stay 500 nits.

Could you tell my why you want 1000 nits of brightness? In a normal environment (even with direct sunlight) 1000 nits will laser your eyes. 500 nits is more than sufficient.
 
Apple considers 500nits sufficient for SDR content (whether it applies to your specific use case is a different question), so that's what they are shipping. The 1000+nits of these new displays are only there for achieving higher contrasts for content in extended gamut range. So it's not a problem, it's operating as designed.

So @rmgbenschop is spot on: you cannot, at least not officially. There might be some sort of hidden setting or hack you can use, but it's not supported, not intended, and not encouraged.
 
Typing on an iPad 9.7” iPad Pro which is 511nits then 500 nits is perfectly fine.
 
I suspect it has less to do with Apple having identified 500 nits as the 'optimal brightness level' and more to do with power consumption optimization - Or minimization rather
 
The problem is more that you can't display correct color values at higher brightness for SDR content because clipping will occur.

You will just end up clipping highlights and shadows leaving you with overexposed content because the color profile doesn't hold the required data. There is nothing whiter than white, you would just push anything near white into being fully white removing highlight detail in the progress. The crushed blacks will simply turn greyish, expose noise and remove contrast. The same goes for tones of red, green and blue.

If you do print and photography you usually calibrate the display around 90-120 nits depending on output format. Meaning you also have to control the room lighting to get proper calibration.

If people started using DCI-P3 or Display P3 (Apple's default color profile) instead of sRGB for content output that may change at some point.

Here is some examples of various wide-gamut images compared to sRGB.
 
The maximum brightness output for the new Macs is 1000 nits sustained and 1600 peak. The caveat is that this brightness threshold is only attainable whilst viewing HDR content - That means the rest of the computer's interface is capped at the previous threshold of 500 nits from earlier-generation machines. This poses the question: How do you achieve the 1000-nit sustained brightness output capacity for SDR content on the MacBook Pro?
You may wish to read up on this on Dpreview.com one of the best photography sites around that deals with hardware. Their review and testing of this machine does the best job of explaining how this works and what is happening in its pretty thorough review.

 
  • Like
Reactions: EmotionalSnow
You may wish to read up on this on Dpreview.com one of the best photography sites around that deals with hardware. Their review and testing of this machine does the best job of explaining how this works and what is happening in its pretty thorough review.


Yep, Apple's software implementation of HDR is simply phenomenal. Like with many graphics-related things before (font rendering, HiDPI rendering), they just do things the right way here. The entire graphics stack is wide-gamut aware and will seamlessly display the correct image. They can even do limited HDR on SDR displays if your brightness is not set to max (they will temporarily increase the brightness and dim the SDR content so that it looks the same, which creates the illusion of HDR content being brighter). Very cool tech.

 
The maximum brightness output for the new Macs is 1000 nits sustained and 1600 peak. The caveat is that this brightness threshold is only attainable whilst viewing HDR content - That means the rest of the computer's interface is capped at the previous threshold of 500 nits from earlier-generation machines. This poses the question: How do you achieve the 1000-nit sustained brightness output capacity for SDR content on the MacBook Pro?
If you did a little research you would find there’s a whole thread on this over a month ago
 
I made a thread on this earlier. Nobody has found a solution yet, but I’m pretty confident that we will eventually — even if it’s really messy.
 
  • Like
Reactions: JohnHerzog
I personally prefer the maximum brightness output possible even in a dimly lit environment. I would use 1000 nits to surf the web
Perhaps time to visit the optometrist to ensure you don't have cataracts developing? 1000 nits is extremely bright when used indoors, unless you are sitting directly in front of a window looking at the sun.

There *is* a use case for having very bright displays when used outdoors, e.g. for camera screens. However, this is very much an edge-case for most laptop computer usage. If you really do need to use your laptop in very bright surroundings there are "sun-shades" to help improve visibility.

61wbm9OlerL._AC_UY218_.jpg
91tX28-s-KS._AC_UY218_.jpg
515cM17mjiL._AC_UY218_.jpg
 
I personally prefer the maximum brightness output possible even in a dimly lit environment. I would use 1000 nits to surf the web
good one...and after 2 months of using in dim light 1000nits...you will check your eyes with your doc
 
When the retina's light-sensing cells become over-stimulated from looking at a bright light, they release massive amounts of singling chemicals, injuring the back of the eye as a result.
Also the high contrast between a bright screen and dark surroundings may cause eyestrain or fatigue that could lead to a headache.
 
  • Like
Reactions: trusso
The maximum brightness output for the new Macs is 1000 nits sustained and 1600 peak. The caveat is that this brightness threshold is only attainable whilst viewing HDR content - That means the rest of the computer's interface is capped at the previous threshold of 500 nits from earlier-generation machines. This poses the question: How do you achieve the 1000-nit sustained brightness output capacity for SDR content on the MacBook Pro?

All SDR content will have very inaccurate colours and blown out areas at higher nits.

Man I wish people would take the time to read a few wikipedia articles and YouTube vids before making posts. It only takes 1 or 2 days of searching and education.
 
  • Like
Reactions: 3Rock
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.