Contrast ratio of OnePlus One

Contrast ratio 154:1
Monitor model OnePlus One
Submitted 25 Aug 2014 23:52 CEST, by 93.106.*.*
Camera model Canon EOS 1000D
Processing remarks

Note: image file 1: suggested exposure time: 2.1 s (Set EV to +1.1)
Note: image file 2: suggested exposure time: 1/73 s (Set EV to +1.1)

Black
Screen photo
Luminance 0.22 cd/m2
Luminance spread 0.26 cd/m2 (2 standard deviations)
Exposure value –3.59 stops   (aim for –2 to –3)
Exposure spread 1.98 stops
Area used for calculation 0.971 x 1
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
Focal length: 69.9 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 34 cd/m2
Luminance spread 47 cd/m2 (2 standard deviations)
Exposure value –3.64 stops   (aim for –2 to –3)
Exposure spread 2.54 stops
Area used for calculation 0.971 x 1
Camera settings Exposure time: 1/160   ISO: 400   F-number: 3.5
Focal length: 69.9 mm   (35 mm equivalent)
Exposure compensation: 0
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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.