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Contrast ratio results for BenQ G2220HD

Contrast ratio 92:1
Monitor model BenQ G2220HD
Submitted 12 Apr 2015 02:20 CEST, by 139.192.*.*
Camera model Canon EOS 70D
Processing remarks

Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/19 s (Set EV to +4.7)

Black
Screen photo
[open image]
Luminance 0.25 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –2.37 stops   (aim for –2 to –3)
Exposure spread 0.67 stops
Area used for calculation 0.525 x 0.591
Camera settings Exposure time: 5.2   ISO: 100   F-number: 2.8
Focal length: 37.8 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 23 cd/m2
Luminance spread 8 cd/m2 (2 standard deviations)
Exposure value –7.22 stops   (aim for –2 to –3)
Exposure spread 0.54 stops
Area used for calculation 0.525 x 0.591
Camera settings Exposure time: 1/512   ISO: 100   F-number: 2.8
Focal length: 37.8 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.