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Contrast ratio of Acer AL1751

Contrast ratio 213:1
Monitor model Acer AL1751
Submitted 29 Feb 2008 19:50 CET, by 88.195.*.*
Camera model Panasonic DMC-FZ30
Processing remarks


Black
Screen photo
[open image]
Luminance 0.43 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –2.95 stops   (aim for –2 to –3)
Exposure spread 0.32 stops
Area used for calculation 0.51 x 0.51
Camera settings Exposure time: 2.5   ISO: 80   F-number: 2.8
Focal length: 35 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 93 cd/m2
Luminance spread 35 cd/m2 (2 standard deviations)
Exposure value –3.5 stops   (aim for –2 to –3)
Exposure spread 0.56 stops
Area used for calculation 0.51 x 0.51
Camera settings Exposure time: 1/125   ISO: 80   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.