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Contrast ratio of LG W2600HP

Contrast ratio 942:1
Monitor model LG W2600HP
Submitted 02 Sep 2008 21:11 CEST, by 89.245.*.*
Camera model Canon PowerShot A75
Processing remarks

Note: image file 2: suggested exposure time: 1/330 s (Set EV to -1.7)

Black
Screen photo
[open image]
Luminance 1.08 cd/m2
Luminance spread 0.23 cd/m2 (2 standard deviations)
Exposure value –2.33 stops   (aim for –2 to –3)
Exposure spread 0.3 stops
Area used for calculation 0.5 x 0.5
Camera settings Exposure time: 3.2   ISO: 100   F-number: 4.5
Focal length: 34.6 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 1013 cd/m2
Luminance spread 79 cd/m2 (2 standard deviations)
Exposure value –0.79 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.5 x 0.5
Camera settings Exposure time: 1/101   ISO: 100   F-number: 4.5
Focal length: 34.6 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.