13 inch MBP Display Brightness - Not as advertised?

tich

macrumors member
Original poster
Mar 8, 2012
62
36
Los Angeles, CA
So I have a 2017 13 inch TB MBP, and a 2017 5k iMac. Both machines' spec say that their displays are 500 nits, when I put one next to the other at full brightness, the iMac is significantly brighter. Am I missing something in the way that brightness is measured (i.e. it's supposed to be this way), or should my MBP be on par with the iMac?
 

matt2053

macrumors 6502a
Jul 8, 2012
549
101
"Nits" are relative to the surface area of the display. The iMac display is four times larger than the MacBook display. Thus, at the same level of brightness in terms of nits, it will output 4 times more light.
 
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tich

macrumors member
Original poster
Mar 8, 2012
62
36
Los Angeles, CA
"Nits" are relative to the surface area of the display. The iMac display is four times larger than the MacBook display. Thus, at the same level of brightness in terms of nits, it will output 4 times more light.
Got it, thanks for the clarification!
 
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