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Contrast ratio of Dell 2209WA

Contrast ratio 1430:1 (edge: 1643:1)
Monitor model Dell 2209WA
Submitted 08 Feb 2009 05:28 CET, by 24.90.*.*
Camera model Canon PowerShot A610
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
image file 3: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.23 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –2.89 stops   (aim for –2 to –3)
Exposure spread 0.38 stops
Area used for calculation 0.495 x 0.495
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 34.3 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 324 cd/m2
Luminance spread 25 cd/m2 (2 standard deviations)
Exposure value –1.37 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.495 x 0.495
Camera settings Exposure time: 1/501   ISO: 400   F-number: 2.8
Focal length: 34.3 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.2 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –3.09 stops   (aim for –2 to –3)
Exposure spread 0.42 stops
Area used for calculation 0.495 x 0.495
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 34.3 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.