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Contrast ratio results for Dell U2412M

Contrast ratio 5303:1
Monitor model Dell U2412M
Submitted 13 Feb 2014 13:33 CET, by 86.50.*.*
Camera model SAMSUNG NX1000
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 13.2 s (Set EV to +3.3)

Black
Screen photo
[open image]
Luminance 0.04 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –8.81 stops   (aim for –2 to –3)
Exposure spread 0.72 stops
Area used for calculation 0.417 x 0.469
Camera settings Exposure time: 1/6   ISO: 400   F-number: 3.5
Focal length: 30 mm   (35 mm equivalent)
Exposure compensation: -3
White
Screen photo
[open image]
Luminance 186 cd/m2
Luminance spread 18 cd/m2 (2 standard deviations)
Exposure value –2.17 stops   (aim for –2 to –3)
Exposure spread 0.14 stops
Area used for calculation 0.417 x 0.469
Camera settings Exposure time: 1/320   ISO: 400   F-number: 3.5
Focal length: 30 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.