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Contrast ratio of DELL 2209wa revA01 B100C50

Contrast ratio 450:1
Monitor model DELL 2209wa revA01 B100C50
Submitted 05 Sep 2009 20:09 CEST, by 87.222.*.*
Camera model Canon EOS 400D DIGITAL
Processing remarks

Note: image file 1: suggested exposure time: 1.7 s (Set EV to +1.1)

Black
Screen photo
[open image]
Luminance 0.27 cd/m2
Luminance spread 0.1 cd/m2 (2 standard deviations)
Exposure value –3.62 stops   (aim for –2 to –3)
Exposure spread 0.57 stops
Area used for calculation 0.39 x 0.44
Camera settings Exposure time: 0.8   ISO: 400   F-number: 3.5
Focal length: 28.1 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 120 cd/m2
Luminance spread 28 cd/m2 (2 standard deviations)
Exposure value –3.45 stops   (aim for –2 to –3)
Exposure spread 0.34 stops
Area used for calculation 0.39 x 0.44
Camera settings Exposure time: 1/500   ISO: 400   F-number: 3.5
Focal length: 28.1 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.