Contrast ratio results

Contrast ratio 4563:1
Monitor model
Submitted 20 Jul 2018 23:42 CEST, by 24.0.*.*
Camera model samsung SM-G955U
Processing remarks

Warning: Image ISO settings are not the same.

Black
Screen photo
Luminance 0.01 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –2.5 stops   (aim for –2 to –3)
Exposure spread 0.67 stops
Area used for calculation 0.342 x 0.472
Camera settings Exposure time: 10   ISO: 400   F-number: 1.7
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 50 cd/m2
Luminance spread 27 cd/m2 (2 standard deviations)
Exposure value –2.57 stops   (aim for –2 to –3)
Exposure spread 0.79 stops
Area used for calculation 0.32 x 0.648
Camera settings Exposure time: 1/60   ISO: 50   F-number: 1.7
Focal length: 26 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.