Contrast ratio results

Contrast ratio 377:1
Monitor model
Submitted 30 Dec 2008 05:00 CET, by 83.42.*.*
Camera model Panasonic DMC-LS60
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 14.0 s (Set EV to +5.8)
Warning: image file 2: automatic white balance can cause inaccuracies.
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/27 s (Set EV to +1.2)

Black
Screen photo
Luminance 0.08 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –6.3 stops   (aim for –2 to –3)
Exposure spread 0.81 stops
Area used for calculation 0.506 x 0.506
Camera settings Exposure time: 1   ISO: 100   F-number: 2.8
Focal length: 35 mm   (35 mm equivalent)
Exposure compensation: 2
White
Screen photo
Luminance 32 cd/m2
Luminance spread 8 cd/m2 (2 standard deviations)
Exposure value –5.71 stops   (aim for –2 to –3)
Exposure spread 0.39 stops
Area used for calculation 0.506 x 0.506
Camera settings Exposure time: 1/250   ISO: 100   F-number: 2.8
Focal length: 35 mm   (35 mm equivalent)
Exposure compensation: -2

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.