Contrast ratio results

Contrast ratio 1536:1
Monitor model
Submitted 07 Sep 2020 22:37 CEST, by 130.43.*.*
Camera model Canon EOS M50
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 56.0 s (Set EV to -1.2)
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/27 s (Set EV to -2.8)

Black
Screen photo
Luminance 0.04 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –8.31 stops   (aim for –2 to –3)
Exposure spread 0.86 stops
Area used for calculation 0.453 x 0.607
Camera settings Exposure time: 1   ISO: 100   F-number: 4
Focal length: 34.2 mm   (35 mm equivalent)
Exposure compensation: -7
White
Screen photo
Luminance 66 cd/m2
Luminance spread 22 cd/m2 (2 standard deviations)
Exposure value –6.72 stops   (aim for –2 to –3)
Exposure spread 0.49 stops
Area used for calculation 0.453 x 0.607
Camera settings Exposure time: 1/512   ISO: 100   F-number: 4
Focal length: 34.2 mm   (35 mm equivalent)
Exposure compensation: -7

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.