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Contrast ratio results for Dell 2209wa

Contrast ratio 4225:1
Monitor model Dell 2209wa
Submitted 31 Mar 2009 03:54 CEST, by 190.50.*.*
Camera model Panasonic DMC-LZ7
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 49.4 s (Set EV to +6.6)
Note: image file 2: suggested exposure time: 1/86 s (Set EV to -0.8)

Black
Screen photo
[open image]
Luminance 0.02 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –8.13 stops   (aim for –2 to –3)
Exposure spread 0.65 stops
Area used for calculation 0.534 x 0.534
Camera settings Exposure time: 1   ISO: 100   F-number: 2.8
Focal length: 37 mm   (35 mm equivalent)
Exposure compensation: 1
White
Screen photo
[open image]
Luminance 101 cd/m2
Luminance spread 4 cd/m2 (2 standard deviations)
Exposure value –0.73 stops   (aim for –2 to –3)
Exposure spread 0.05 stops
Area used for calculation 0.534 x 0.534
Camera settings Exposure time: 1/25   ISO: 100   F-number: 2.8
Focal length: 37 mm   (35 mm equivalent)
Exposure compensation: 1

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.