Contrast ratio results

Contrast ratio 1:1
Monitor model
Submitted 26 Apr 2013 20:14 CEST, by 81.202.*.*
Camera model Olympus E-520
Processing remarks

Warning: using the flash makes no sense.
image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: using the flash makes no sense.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.

Black
Screen photo
Luminance 2.68 cd/m2
Luminance spread 8.72 cd/m2 (2 standard deviations)
Exposure value –2.71 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.578 x 0.578
Camera settings Exposure time: 1/6   ISO: 400   F-number: 3.7
Focal length: 40 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 3.75 cd/m2
Luminance spread 12.23 cd/m2 (2 standard deviations)
Exposure value –2.96 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.578 x 0.578
Camera settings Exposure time: 1/10   ISO: 400   F-number: 3.7
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.