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Contrast ratio of Dell 2408WFP

Contrast ratio 943:1
Monitor model Dell 2408WFP
Submitted 14 Jun 2009 05:37 CEST, by 69.177.*.*
Camera model Canon EOS 40D
Processing remarks


Black
Screen photo
[open image]
Luminance 0.17 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –2.59 stops   (aim for –2 to –3)
Exposure spread 0.29 stops
Area used for calculation 0.63 x 0.71
Camera settings Exposure time: 2.6   ISO: 400   F-number: 3.5
Focal length: 45.4 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 158 cd/m2
Luminance spread 30 cd/m2 (2 standard deviations)
Exposure value –1.71 stops   (aim for –2 to –3)
Exposure spread 0.28 stops
Area used for calculation 0.63 x 0.71
Camera settings Exposure time: 1/197   ISO: 400   F-number: 3.5
Focal length: 45.4 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.