Contrast ratio results

Contrast ratio 691:1
Monitor model
Submitted 19 Nov 2016 17:11 CET, by 194.102.*.*
Camera model Canon EOS 600D
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Warning: image file 2: camera was zoomed in too much.

Black
Screen photo
Luminance 0.43 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –1.96 stops   (aim for –2 to –3)
Exposure spread 0.36 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 78.6 mm   (35 mm equivalent)
Exposure compensation: 2
White
Screen photo
Luminance 298 cd/m2
Luminance spread 22 cd/m2 (2 standard deviations)
Exposure value –0.9 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/332   ISO: 400   F-number: 2.8
Focal length: 78.6 mm   (35 mm equivalent)
Exposure compensation: 5

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.