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Contrast ratio results for BenQ GW2750HM

Contrast ratio 2967:1
Monitor model BenQ GW2750HM
Submitted 12 Mar 2013 15:40 CET, by 188.27.*.*
Camera model Nikon D40
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 5.8 s (Set EV to +1.5)
Note: image file 2: suggested exposure time: 1/510 s (Set EV to -1.0)

Black
Screen photo
[open image]
Luminance 0.05 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –4.03 stops   (aim for –2 to –3)
Exposure spread 2.13 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 2   ISO: 1600   F-number: 5.6
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 152 cd/m2
Luminance spread 12 cd/m2 (2 standard deviations)
Exposure value –1.46 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/250   ISO: 1600   F-number: 5.6
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
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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.