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Contrast ratio results for NEC LCD2690WUXI2

Contrast ratio 641:1
Monitor model NEC LCD2690WUXI2
Submitted 24 Jan 2011 00:21 CET, by 79.163.*.*
Camera model Canon EOS 50D
Processing remarks

Warning: image file 1: camera was zoomed out too much.
Warning: image file 2: camera was zoomed out too much.
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
[open image]
Luminance 0.39 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –3.12 stops   (aim for –2 to –3)
Exposure spread 0.06 stops
Area used for calculation 0.1 x 0.113
Camera settings Exposure time: 0.5   ISO: 800   F-number: 4
Focal length: 0.6 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 253 cd/m2
Luminance spread 11 cd/m2 (2 standard deviations)
Exposure value –2.42 stops   (aim for –2 to –3)
Exposure spread 0.06 stops
Area used for calculation 0.1 x 0.113
Camera settings Exposure time: 1/790   ISO: 800   F-number: 4
Focal length: 0.6 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.