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Contrast ratio results for LG Flatron Slim

Contrast ratio 30:1
Monitor model LG Flatron Slim
Submitted 29 Mar 2011 10:47 CEST, by 90.191.*.*
Camera model Canon DIGITAL IXUS 95 IS
Processing remarks

image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
image file 3: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?

Black
Screen photo
[open image]
Luminance 3.6 cd/m2
Luminance spread 1.6 cd/m2 (2 standard deviations)
Exposure value –2.22 stops   (aim for –2 to –3)
Exposure spread 0.65 stops
Area used for calculation 0.494 x 0.494
Camera settings Exposure time: 1/10   ISO: 400   F-number: 2.8
Focal length: 34.2 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 109 cd/m2
Luminance spread 35 cd/m2 (2 standard deviations)
Exposure value –1.63 stops   (aim for –2 to –3)
Exposure spread 0.46 stops
Area used for calculation 0.494 x 0.494
Camera settings Exposure time: 1/202   ISO: 400   F-number: 2.8
Focal length: 34.2 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 47 cd/m2
Luminance spread 94 cd/m2 (2 standard deviations)
Exposure value –1.85 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.494 x 0.494
Camera settings Exposure time: 1/101   ISO: 400   F-number: 2.8
Focal length: 34.2 mm   (35 mm equivalent)
Exposure compensation: 0
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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.