Contrast ratio results

Contrast ratio 313:1
Monitor model
Submitted 17 Feb 2012 04:04 CET, by 68.63.*.*
Camera model Olympus E-520
Processing remarks


Black
Screen photo
Luminance 0.51 cd/m2
Luminance spread 0.75 cd/m2 (2 standard deviations)
Exposure value –1.98 stops   (aim for –2 to –3)
Exposure spread 2.73 stops
Area used for calculation 0.347 x 0.347
Camera settings Exposure time: 1.3   ISO: 400   F-number: 3.5
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 1.7
White
Screen photo
Luminance 160 cd/m2
Luminance spread 22 cd/m2 (2 standard deviations)
Exposure value –2.52 stops   (aim for –2 to –3)
Exposure spread 0.2 stops
Area used for calculation 0.347 x 0.347
Camera settings Exposure time: 1/350   ISO: 400   F-number: 3.5
Focal length: 24 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.