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Contrast ratio results for Dell 2405FPW

Contrast ratio 8078:1
Monitor model Dell 2405FPW
Submitted 22 Mar 2010 02:20 CET, by 66.61.*.*
Camera model Canon EOS 30D
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 10.7 s (Set EV to +7.7)

Black
Screen photo
[open image]
Luminance 0.03 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –10.24 stops   (aim for –2 to –3)
Exposure spread 0.69 stops
Area used for calculation 0.369 x 0.416
Camera settings Exposure time: 1/20   ISO: 400   F-number: 2.8
Focal length: 26.6 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 224 cd/m2
Luminance spread 20 cd/m2 (2 standard deviations)
Exposure value –1.58 stops   (aim for –2 to –3)
Exposure spread 0.13 stops
Area used for calculation 0.369 x 0.416
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
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.