Contrast ratio results

Contrast ratio 201:1
Monitor model
Submitted 10 May 2011 15:01 CEST, by 80.98.*.*
Camera model Panasonic DMC-FZ28
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 0.4 s (Set EV to -1.2)

Black
Screen photo
Luminance 0.7 cd/m2
Luminance spread 0.75 cd/m2 (2 standard deviations)
Exposure value –1.26 stops   (aim for –2 to –3)
Exposure spread 1.71 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 140 cd/m2
Luminance spread 47 cd/m2 (2 standard deviations)
Exposure value –2.25 stops   (aim for –2 to –3)
Exposure spread 0.49 stops
Area used for calculation 0.39 x 0.39
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 27 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.