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Contrast ratio results for MacBook 15.4" late-2016 | Dynamic Contra

Contrast ratio 27816:1
Monitor model MacBook 15.4" late-2016 | Dynamic Contra
Submitted 30 Jun 2021 13:33 CEST, by 110.54.*.*
Camera model Canon EOS 80D
Processing remarks

image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 66.4 s (Set EV to +11.1)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.01 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –13.55 stops   (aim for –2 to –3)
Exposure spread 1.51 stops
Area used for calculation 0.389 x 0.438
Camera settings Exposure time: 1/32   ISO: 400   F-number: 3.5
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 194 cd/m2
Luminance spread 64 cd/m2 (2 standard deviations)
Exposure value –1.79 stops   (aim for –2 to –3)
Exposure spread 0.48 stops
Area used for calculation 0.389 x 0.438
Camera settings Exposure time: 1/256   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.