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Contrast ratio of Dell Ultrasharp 2208 WFP

Contrast ratio 848:1
Monitor model Dell Ultrasharp 2208 WFP
Submitted 01 Jan 2009 15:09 CET, by 117.199.*.*
Camera model Canon EOS DIGITAL REBEL XT
Processing remarks


Black
Screen photo
[open image]
Luminance 0.42 cd/m2
Luminance spread 0.1 cd/m2 (2 standard deviations)
Exposure value –2.63 stops   (aim for –2 to –3)
Exposure spread 0.35 stops
Area used for calculation 0.369 x 0.416
Camera settings Exposure time: 1.3   ISO: 400   F-number: 4
Focal length: 26.6 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 360 cd/m2
Luminance spread 85 cd/m2 (2 standard deviations)
Exposure value –2.25 stops   (aim for –2 to –3)
Exposure spread 0.34 stops
Area used for calculation 0.369 x 0.416
Camera settings Exposure time: 1/500   ISO: 400   F-number: 4
Focal length: 26.6 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.