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Contrast ratio of ViewSonic VX2233wm

Contrast ratio 1:1
Monitor model ViewSonic VX2233wm
Submitted 04 Mar 2009 14:00 CET, by 114.198.*.*
Camera model Nikon D70
Processing remarks

Note: image file 1: suggested exposure time: 1/33 s (Set EV to +0.3)

Black
Screen photo
[open image]
Luminance 15 cd/m2
Luminance spread 11 cd/m2 (2 standard deviations)
Exposure value –2.4 stops   (aim for –2 to –3)
Exposure spread 1.15 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/30   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 15 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –0.79 stops   (aim for –2 to –3)
Exposure spread 0.7 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/10   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 2

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.