Contrast ratio results

Contrast ratio 958:1
Monitor model
Submitted 17 Feb 2012 04:49 CET, by 68.63.*.*
Camera model Olympus E-520
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Note: image file 1: suggested exposure time: 1.8 s (Set EV to +2.8)
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).

Black
Screen photo
Luminance 0.17 cd/m2
Luminance spread 0.18 cd/m2 (2 standard deviations)
Exposure value –3.64 stops   (aim for –2 to –3)
Exposure spread 1.7 stops
Area used for calculation 0.528 x 0.852
Camera settings Exposure time: 0.8   ISO: 400   F-number: 2.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 1.7
White
Screen photo
Luminance 160 cd/m2
Luminance spread 24 cd/m2 (2 standard deviations)
Exposure value –2.38 stops   (aim for –2 to –3)
Exposure spread 0.22 stops
Area used for calculation 0.528 x 0.601
Camera settings Exposure time: 1/500   ISO: 400   F-number: 2.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: -1

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.