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Contrast ratio of LG W1942S

Contrast ratio 1166:1 (edge: 1449:1)
Monitor model LG W1942S
Submitted 11 Feb 2013 18:27 CET, by 130.25.*.*
Camera model Canon PowerShot A470
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 0.07 cd/m2 (2 standard deviations)
Exposure value –3.37 stops   (aim for –2 to –3)
Exposure spread 0.41 stops
Area used for calculation 0.542 x 0.542
Camera settings Exposure time: 0.8   ISO: 400   F-number: 3
Focal length: 37.5 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 271 cd/m2
Luminance spread 36 cd/m2 (2 standard deviations)
Exposure value –1.51 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 0.542 x 0.542
Camera settings Exposure time: 1/403   ISO: 400   F-number: 3
Focal length: 37.5 mm   (35 mm equivalent)
Exposure compensation: 1
Black at screen edge
Screen photo
[open image]
Luminance 0.19 cd/m2
Luminance spread 0.1 cd/m2 (2 standard deviations)
Exposure value –3.36 stops   (aim for –2 to –3)
Exposure spread 0.82 stops
Area used for calculation 0.542 x 0.542
Camera settings Exposure time: 1   ISO: 400   F-number: 3
Focal length: 37.5 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.