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Contrast ratio of hp2335

Contrast ratio 307:1
Monitor model hp2335
Submitted 12 Nov 2011 21:48 CET, by 94.132.*.*
Camera model Nikon D3
Processing remarks

Note: image file 1: suggested exposure time: 9.6 s (Set EV to -0.1)

Black
Screen photo
[open image]
Luminance 0.2 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –1.44 stops   (aim for –2 to –3)
Exposure spread 0.22 stops
Area used for calculation 0.389 x 0.438
Camera settings Exposure time: 20   ISO: 400   F-number: 7.1
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 1
White
Screen photo
[open image]
Luminance 61 cd/m2
Luminance spread 5 cd/m2 (2 standard deviations)
Exposure value –2.41 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.389 x 0.438
Camera settings Exposure time: 1/30   ISO: 400   F-number: 7.1
Focal length: 28 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.