Contrast ratio results for Dell 2209WA

Contrast ratio 968:1
Monitor model Dell 2209WA
Submitted 31 Jul 2009 13:38 CEST, by 24.171.*.*
Camera model Canon EOS DIGITAL REBEL XT
Processing remarks

Warning: Image ISO settings are not the same.

Black
Screen photo
Luminance 0.2 cd/m2
Luminance spread 0.17 cd/m2 (2 standard deviations)
Exposure value –2.73 stops   (aim for –2 to –3)
Exposure spread 1.33 stops
Area used for calculation 0.521 x 0.586
Camera settings Exposure time: 2   ISO: 400   F-number: 3.5
Focal length: 37.5 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 192 cd/m2
Luminance spread 80 cd/m2 (2 standard deviations)
Exposure value –1.77 stops   (aim for –2 to –3)
Exposure spread 0.61 stops
Area used for calculation 0.521 x 0.586
Camera settings Exposure time: 1/500   ISO: 800   F-number: 3.5
Focal length: 37.5 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.