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Contrast ratio results for MacBook 15.4" late-2016 | Gamma

Contrast ratio 6:1
Monitor model MacBook 15.4" late-2016 | Gamma
Submitted 30 Jun 2021 13:34 CEST, by 110.54.*.*
Camera model Canon EOS 80D
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/15 s (Set EV to +4.7)

Black
Screen photo
[open image]
Luminance 7 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –7.24 stops   (aim for –2 to –3)
Exposure spread 1.73 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 1/395   ISO: 400   F-number: 3.5
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 38 cd/m2
Luminance spread 14 cd/m2 (2 standard deviations)
Exposure value –2.53 stops   (aim for –2 to –3)
Exposure spread 0.55 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 1/83   ISO: 400   F-number: 3.5
Focal length: 28 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.