Contrast ratio results

Contrast ratio 119:1
Monitor model
Submitted 19 Apr 2020 18:45 CEST, by 14.177.*.*
Camera model Canon EOS M50
Processing remarks

Note: image file 1: suggested exposure time: 1/4 s (Set EV to -1.1)
Note: image file 2: suggested exposure time: 1/500 s (Set EV to -1.3)

Black
Screen photo
Luminance 0.63 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –1.44 stops   (aim for –2 to –3)
Exposure spread 0.25 stops
Area used for calculation 0.475 x 0.534
Camera settings Exposure time: 0.5   ISO: 400   F-number: 2
Focal length: 34.2 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 75 cd/m2
Luminance spread 20 cd/m2 (2 standard deviations)
Exposure value –1.17 stops   (aim for –2 to –3)
Exposure spread 0.38 stops
Area used for calculation 0.475 x 0.534
Camera settings Exposure time: 1/197   ISO: 400   F-number: 2
Focal length: 34.2 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.