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Contrast ratio results for Acer Aspire V5

Contrast ratio 1089:1
Monitor model Acer Aspire V5
Submitted 13 Jan 2015 19:58 CET, by 89.12.*.*
Camera model Sony DSC-H5
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
[open image]
Luminance 0.31 cd/m2
Luminance spread 0.12 cd/m2 (2 standard deviations)
Exposure value –3.44 stops   (aim for –2 to –3)
Exposure spread 0.55 stops
Area used for calculation 0.521 x 0.521
Camera settings Exposure time: 0.5   ISO: 400   F-number: 2.8
Focal length: 36.1 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 335 cd/m2
Luminance spread 40 cd/m2 (2 standard deviations)
Exposure value –1.68 stops   (aim for –2 to –3)
Exposure spread 0.17 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
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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.