Contrast ratio results

Contrast ratio 93:1
Monitor model
Submitted 15 Feb 2011 15:33 CET, by 86.135.*.*
Camera model Canon EOS 350D DIGITAL
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Note: image file 1: suggested exposure time: 28.3 s (Set EV to +1.5)
Warning: image file 2: camera was zoomed in too much.
Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 0.3 s (Set EV to -0.1)

Black
Screen photo
Luminance 0.04 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –4 stops   (aim for –2 to –3)
Exposure spread 0.78 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 10   ISO: 400   F-number: 5.6
Focal length: 85.9 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 3.87 cd/m2
Luminance spread 0.53 cd/m2 (2 standard deviations)
Exposure value –0.41 stops   (aim for –2 to –3)
Exposure spread 0.2 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1.3   ISO: 400   F-number: 5.6
Focal length: 85.9 mm   (35 mm equivalent)
Exposure compensation: 2

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.