Contrast ratio results

Contrast ratio 1150:1
Monitor model
Submitted 10 Mar 2009 23:15 CET, by 99.238.*.*
Camera model CASIO COMPUTER CO.LTD. EX-Z120
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 22.4 s (Set EV to +4.5)
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/51 s (Set EV to +3.0)

Black
Screen photo
Luminance 0.11 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –6.99 stops   (aim for –2 to –3)
Exposure spread 0.61 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 1   ISO: 50   F-number: 2.8
Focal length: 38 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 121 cd/m2
Luminance spread 18 cd/m2 (2 standard deviations)
Exposure value –5.46 stops   (aim for –2 to –3)
Exposure spread 0.21 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 1/400   ISO: 50   F-number: 2.8
Focal length: 38 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.