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Contrast ratio results for Acer X233H

Contrast ratio 833:1
Monitor model Acer X233H
Submitted 17 Oct 2009 22:51 CEST, by 68.160.*.*
Camera model Nikon D70
Processing remarks

Warning: image file 1: Overexposed. Please decrease the shutter time.
Note: image file 1: suggested exposure time: 5.3 s (Set EV to +2.5)

Black
Screen photo
[open image]
Luminance 0.09 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –0 stops   (aim for –2 to –3)
Exposure spread 0 stops
Area used for calculation 0.583 x 0.657
Camera settings Exposure time: 30   ISO: 800   F-number: 5
Focal length: 42 mm   (35 mm equivalent)
Exposure compensation: 5
White
Screen photo
[open image]
Luminance 74 cd/m2
Luminance spread 34 cd/m2 (2 standard deviations)
Exposure value –1.53 stops   (aim for –2 to –3)
Exposure spread 0.67 stops
Area used for calculation 0.583 x 0.657
Camera settings Exposure time: 1/80   ISO: 800   F-number: 5
Focal length: 42 mm   (35 mm equivalent)
Exposure compensation: 0
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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.