Contrast ratio results

Contrast ratio 2896:1
Monitor model
Submitted 09 Apr 2017 04:51 CEST, by 50.24.*.*
Camera model samsung SAMSUNG-SM-G890A
Processing remarks


Black
Screen photo
Luminance 0.03 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –2.16 stops   (aim for –2 to –3)
Exposure spread 0.56 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 10   ISO: 200   F-number: 1.9
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 100 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –1.95 stops   (aim for –2 to –3)
Exposure spread 0.13 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/249   ISO: 200   F-number: 1.9
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.