Contrast ratio of Dell UltraSharp WFP24

Contrast ratio 729:1
Monitor model Dell UltraSharp WFP24
Submitted 23 May 2008 12:23 CEST, by 124.170.*.*
Camera model Canon EOS 350D DIGITAL
Processing remarks


Black
Screen photo
Luminance 0.32 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –2.4 stops   (aim for –2 to –3)
Exposure spread 0.32 stops
Area used for calculation 0.369 x 0.416
Camera settings Exposure time: 4   ISO: 200   F-number: 4
Focal length: 26.6 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 236 cd/m2
Luminance spread 47 cd/m2 (2 standard deviations)
Exposure value –1.85 stops   (aim for –2 to –3)
Exposure spread 0.29 stops
Area used for calculation 0.369 x 0.416
Camera settings Exposure time: 1/125   ISO: 200   F-number: 4
Focal length: 26.6 mm   (35 mm equivalent)
Exposure compensation: 0
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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.