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Contrast ratio of Acer X193W

Contrast ratio 406:1
Monitor model Acer X193W
Submitted 15 Jul 2012 00:47 CEST, by 82.6.*.*
Camera model Nikon D3100
Processing remarks


Black
Screen photo
[open image]
Luminance 0.13 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –2.04 stops   (aim for –2 to –3)
Exposure spread 0.2 stops
Area used for calculation 0.375 x 0.422
Camera settings Exposure time: 5   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 7
White
Screen photo
[open image]
Luminance 52 cd/m2
Luminance spread 12 cd/m2 (2 standard deviations)
Exposure value –1.6 stops   (aim for –2 to –3)
Exposure spread 0.32 stops
Area used for calculation 0.375 x 0.422
Camera settings Exposure time: 1/60   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 7

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.