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Contrast ratio results for Videoseven L22WD

Contrast ratio 989:1
Monitor model Videoseven L22WD
Submitted 11 Oct 2012 16:39 CEST, by 93.200.*.*
Camera model Sony DSC-P92
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: 2.5 s (Set EV to +1.3)
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).

Black
Screen photo
[open image]
Luminance 0.12 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –3.84 stops   (aim for –2 to –3)
Exposure spread 1.19 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 116 cd/m2
Luminance spread 17 cd/m2 (2 standard deviations)
Exposure value –1.53 stops   (aim for –2 to –3)
Exposure spread 0.21 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/200   ISO: 400   F-number: 2.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0.3

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.