Contrast ratio results for AOC LM 725

Contrast ratio 703:1 (edge: 544:1)
Monitor model AOC LM 725
Submitted 28 Aug 2010 13:06 CEST, by 80.31.*.*
Camera model Canon EOS 550D
Processing remarks

Warning: image file 1: camera was zoomed out too much.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 1.4 s (Set EV to +1.5)
Warning: image file 2: camera was zoomed out too much.
Warning: image file 3: camera was zoomed out too much.
image file 3: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Note: image file 3: suggested exposure time: 1.1 s (Set EV to +1.1)

Black
Screen photo
Luminance 0.32 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –4.02 stops   (aim for –2 to –3)
Exposure spread 0.25 stops
Area used for calculation 0.1 x 0.113
Camera settings Exposure time: 0.5   ISO: 400   F-number: 3.5
Focal length: 1.4 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 227 cd/m2
Luminance spread 23 cd/m2 (2 standard deviations)
Exposure value –1.56 stops   (aim for –2 to –3)
Exposure spread 0.15 stops
Area used for calculation 0.1 x 0.113
Camera settings Exposure time: 1/256   ISO: 400   F-number: 3.5
Focal length: 1.4 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
Luminance 0.42 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –3.65 stops   (aim for –2 to –3)
Exposure spread 0.24 stops
Area used for calculation 0.1 x 0.113
Camera settings Exposure time: 0.5   ISO: 400   F-number: 3.5
Focal length: 1.4 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.