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Contrast ratio results for Dell 2209WA

Contrast ratio 344:1
Monitor model Dell 2209WA
Submitted 02 Jun 2012 10:05 CEST, by 79.177.*.*
Camera model Canon EOS 40D
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 5.5 s (Set EV to +2.5)
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/63 s (Set EV to +2.7)

Black
Screen photo
[open image]
Luminance 0.11 cd/m2
Luminance spread 0.1 cd/m2 (2 standard deviations)
Exposure value –4.95 stops   (aim for –2 to –3)
Exposure spread 1.4 stops
Area used for calculation 0.382 x 0.429
Camera settings Exposure time: 1   ISO: 200   F-number: 2.8
Focal length: 27.5 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 37 cd/m2
Luminance spread 6 cd/m2 (2 standard deviations)
Exposure value –5.15 stops   (aim for –2 to –3)
Exposure spread 0.24 stops
Area used for calculation 0.382 x 0.429
Camera settings Exposure time: 1/395   ISO: 200   F-number: 2.8
Focal length: 27.5 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.