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Contrast ratio of BenQ GW2750HM

Contrast ratio 3286:1
Monitor model BenQ GW2750HM
Submitted 12 Mar 2013 21:11 CET, by 188.27.*.*
Camera model Nikon D40
Processing remarks


Black
Screen photo
[open image]
Luminance 0.05 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –3.31 stops   (aim for –2 to –3)
Exposure spread 1.5 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 15   ISO: 800   F-number: 8
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 151 cd/m2
Luminance spread 20 cd/m2 (2 standard deviations)
Exposure value –1.85 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/80   ISO: 800   F-number: 8
Focal length: 27 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.