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Contrast ratio of samsung 943nwx

Contrast ratio 513:1 (edge: 603:1)
Monitor model samsung 943nwx
Submitted 19 Dec 2010 08:54 CET, by 189.160.*.*
Camera model Nikon D40
Processing remarks

Note: image file 3: suggested exposure time: 3.6 s (Set EV to -1.2)

Black
Screen photo
[open image]
Luminance 0.15 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –1.78 stops   (aim for –2 to –3)
Exposure spread 0.41 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 5   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 78 cd/m2
Luminance spread 14 cd/m2 (2 standard deviations)
Exposure value –3.06 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/250   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.13 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –1.33 stops   (aim for –2 to –3)
Exposure spread 0.28 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 8   ISO: 400   F-number: 3.5
Focal length: 27 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.