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Contrast ratio results for Acer AL 1916s

Contrast ratio 495:1 (edge: 285:1)
Monitor model Acer AL 1916s
Submitted 04 May 2011 14:44 CEST, by 94.180.*.*
Camera model Nikon COOLPIX L16
Processing remarks

Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0.27 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –1.97 stops   (aim for –2 to –3)
Exposure spread 0.14 stops
Area used for calculation 0.506 x 0.506
Camera settings Exposure time: 0.8   ISO: 800   F-number: 2.8
Focal length: 35 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 132 cd/m2
Luminance spread 25 cd/m2 (2 standard deviations)
Exposure value –1.92 stops   (aim for –2 to –3)
Exposure spread 0.27 stops
Area used for calculation 0.506 x 0.506
Camera settings Exposure time: 1/60   ISO: 80   F-number: 2.8
Focal length: 35 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.46 cd/m2
Luminance spread 0.21 cd/m2 (2 standard deviations)
Exposure value –1.85 stops   (aim for –2 to –3)
Exposure spread 0.66 stops
Area used for calculation 0.506 x 0.506
Camera settings Exposure time: 0.5   ISO: 800   F-number: 2.8
Focal length: 35 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.