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Contrast ratio results for Asus VW225N

Contrast ratio 14599:1
Monitor model Asus VW225N
Submitted 06 Oct 2011 19:56 CEST, by 83.29.*.*
Camera model Canon PowerShot A410
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 110.9 s (Set EV to +6.8)
Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/130 s (Set EV to -2.4)

Black
Screen photo
[open image]
Luminance 0.02 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –9.29 stops   (aim for –2 to –3)
Exposure spread 0.6 stops
Area used for calculation 0.578 x 0.578
Camera settings Exposure time: 1   ISO: 50   F-number: 2.8
Focal length: 40 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 312 cd/m2
Luminance spread 19 cd/m2 (2 standard deviations)
Exposure value –0.1 stops   (aim for –2 to –3)
Exposure spread 0.09 stops
Area used for calculation 0.578 x 0.578
Camera settings Exposure time: 1/25   ISO: 50   F-number: 2.8
Focal length: 40 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.