Contrast ratio results

Contrast ratio 813:1
Monitor model
Submitted 20 Jun 2009 19:43 CEST, by 81.183.*.*
Camera model Olympus SP510UZ
Processing remarks

Note: image file 1: suggested exposure time: 1.7 s (Set EV to -1.2)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
Luminance 0.17 cd/m2
Luminance spread 0.14 cd/m2 (2 standard deviations)
Exposure value –1.3 stops   (aim for –2 to –3)
Exposure spread 1.22 stops
Area used for calculation 0.55 x 0.55
Camera settings Exposure time: 4   ISO: 400   F-number: 2.8
Focal length: 38.1 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 138 cd/m2
Luminance spread 104 cd/m2 (2 standard deviations)
Exposure value –2.6 stops   (aim for –2 to –3)
Exposure spread 1.14 stops
Area used for calculation 0.55 x 0.55
Camera settings Exposure time: 1/500   ISO: 400   F-number: 2.8
Focal length: 38.1 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.