Contrast ratio results for Samsung 215TW

Contrast ratio 647:1
Monitor model Samsung 215TW
Submitted 16 Jan 2010 18:56 CET, by 92.195.*.*
Camera model Panasonic DMC-GF1
Processing remarks

Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
Luminance 0.36 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –2.1 stops   (aim for –2 to –3)
Exposure spread 0.16 stops
Area used for calculation 0.578 x 0.578
Camera settings Exposure time: 0.4   ISO: 400   F-number: 1.7
Focal length: 40 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 233 cd/m2
Luminance spread 70 cd/m2 (2 standard deviations)
Exposure value –2.09 stops   (aim for –2 to –3)
Exposure spread 0.44 stops
Area used for calculation 0.578 x 0.578
Camera settings Exposure time: 1/1600   ISO: 400   F-number: 1.7
Focal length: 40 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.