Contrast ratio results for Acer Aspire V5

Contrast ratio 969:1
Monitor model Acer Aspire V5
Submitted 13 Jan 2015 20:04 CET, by 89.12.*.*
Camera model Sony DSC-H5
Processing remarks

Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
Luminance 0.36 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –2.22 stops   (aim for –2 to –3)
Exposure spread 0.38 stops
Area used for calculation 0.521 x 0.521
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 36.1 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 347 cd/m2
Luminance spread 45 cd/m2 (2 standard deviations)
Exposure value –1.63 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 0.521 x 0.521
Camera settings Exposure time: 1/640   ISO: 400   F-number: 2.8
Focal length: 36.1 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.