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Contrast ratio of Belinea 1980 S1

Contrast ratio 349:1
Monitor model Belinea 1980 S1
Submitted 21 Jan 2011 23:05 CET, by 82.123.*.*
Camera model Canon PowerShot A590 IS
Processing remarks

Note: image file 1: suggested exposure time: 4.2 s (Set EV to -1.2)
Note: image file 2: suggested exposure time: 1/83 s (Set EV to -1.7)

Black
Screen photo
[open image]
Luminance 0.14 cd/m2
Luminance spread 0.07 cd/m2 (2 standard deviations)
Exposure value –1.26 stops   (aim for –2 to –3)
Exposure spread 0.77 stops
Area used for calculation 0.495 x 0.495
Camera settings Exposure time: 9.9   ISO: 200   F-number: 2.8
Focal length: 34.3 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 49 cd/m2
Luminance spread 3 cd/m2 (2 standard deviations)
Exposure value –0.77 stops   (aim for –2 to –3)
Exposure spread 0.1 stops
Area used for calculation 0.495 x 0.495
Camera settings Exposure time: 1/25   ISO: 200   F-number: 2.8
Focal length: 34.3 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.