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Contrast ratio results for Lg226wt

Contrast ratio 325:1
Monitor model Lg226wt
Submitted 07 Aug 2010 17:01 CEST, by 84.49.*.*
Camera model Canon PowerShot S80
Processing remarks

Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/54 s (Set EV to +2.2)

Black
Screen photo
[open image]
Luminance 0.2 cd/m2
Luminance spread 0.08 cd/m2 (2 standard deviations)
Exposure value –3.41 stops   (aim for –2 to –3)
Exposure spread 0.59 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 3.2   ISO: 100   F-number: 2.8
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 64 cd/m2
Luminance spread 32 cd/m2 (2 standard deviations)
Exposure value –4.71 stops   (aim for –2 to –3)
Exposure spread 0.73 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 1/251   ISO: 100   F-number: 2.8
Focal length: 27 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.