Contrast ratio results for DELL 2209wa

Contrast ratio 781:1
Monitor model DELL 2209wa
Submitted 04 Sep 2009 23:52 CEST, by 87.222.*.*
Camera model Canon EOS 400D DIGITAL
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Note: image file 1: suggested exposure time: 2.1 s (Set EV to +1.4)
Warning: image file 2: camera was zoomed in too much.
Warning: Image ISO settings are not the same.
Warning: Image F-number settings are not the same.

Black
Screen photo
Luminance 0.14 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –3.88 stops   (aim for –2 to –3)
Exposure spread 0.49 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 0.8   ISO: 1   F-number: 5.6
Focal length: 84.4 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 111 cd/m2
Luminance spread 18 cd/m2 (2 standard deviations)
Exposure value –2.94 stops   (aim for –2 to –3)
Exposure spread 0.24 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/10   ISO: 100   F-number: 10
Focal length: 84.4 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.