Contrast ratio results for MacBook Pro 2015 15"

Contrast ratio 915:1
Monitor model MacBook Pro 2015 15"
Submitted 14 May 2020 23:05 CEST, by 86.22.*.*
Camera model Nikon D800
Processing remarks

Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
Luminance 0.69 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –2.05 stops   (aim for –2 to –3)
Exposure spread 0.22 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 0.6   ISO: 800   F-number: 4
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 629 cd/m2
Luminance spread 140 cd/m2 (2 standard deviations)
Exposure value –2.12 stops   (aim for –2 to –3)
Exposure spread 0.32 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/1600   ISO: 800   F-number: 4
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0

The luminance values in cd/m2 are not very reliable, since camera sensitivities can easily differ up to 50% from their nominal value. Typically, the real luminance is 30% lower than this number. The area used for calculation is chosen such that it corresponds to a viewing angle of ±14° horizontally and ±10.5° vertically, which is equivalent to viewing the screen from a distance of about 1.5 times the diagonal size.

Unfortunately, there is a lot of variation in how cameras use EXIF settings. If photos from your camera your produce unusable results, try coming back in a few days. I review submitted pictures regularly and try to fix problems.