Contrast ratio results for Philips 109s

Contrast ratio 1243:1
Monitor model Philips 109s
Submitted 19 Feb 2008 05:39 CET, by 24.192.*.*
Camera model Sony DSC-P200
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 29.3 s (Set EV to +7.9)
Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/42 s (Set EV to -2.4)

Black
Screen photo
Luminance 0.01 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –10.37 stops   (aim for –2 to –3)
Exposure spread 0.79 stops
Area used for calculation 0.55 x 0.55
Camera settings Exposure time: 1/8   ISO: 400   F-number: 2.8
Focal length: 38.2 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 13 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –0.09 stops   (aim for –2 to –3)
Exposure spread 0 stops
Area used for calculation 0.55 x 0.55
Camera settings Exposure time: 1/8   ISO: 400   F-number: 2.8
Focal length: 38.2 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.