Contrast ratio results

Contrast ratio 285:1
Monitor model
Submitted 06 Jun 2018 14:11 CEST, by 90.228.*.*
Camera model Canon EOS 1000D
Processing remarks

Note: image file 2: suggested exposure time: 1/81 s (Set EV to +1.3)

Black
Screen photo
Luminance 0.27 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –3.32 stops   (aim for –2 to –3)
Exposure spread 0.58 stops
Area used for calculation 0.831 x 0.937
Camera settings Exposure time: 2   ISO: 400   F-number: 5
Focal length: 59.9 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 76 cd/m2
Luminance spread 48 cd/m2 (2 standard deviations)
Exposure value –3.79 stops   (aim for –2 to –3)
Exposure spread 0.94 stops
Area used for calculation 0.831 x 0.937
Camera settings Exposure time: 1/197   ISO: 400   F-number: 5
Focal length: 59.9 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.