Contrast ratio results

Contrast ratio 1086:1
Monitor model
Submitted 09 Jan 2011 09:40 CET, by 76.16.*.*
Camera model Olympus E-450
Processing remarks

Warning: using the flash makes no sense.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 2.9 s (Set EV to +1.5)
Warning: using the flash makes no sense.

Black
Screen photo
Luminance 0.13 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –4.04 stops   (aim for –2 to –3)
Exposure spread 0.49 stops
Area used for calculation 0.493 x 0.493
Camera settings Exposure time: 1   ISO: 400   F-number: 3.2
Focal length: 34.1 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 144 cd/m2
Luminance spread 44 cd/m2 (2 standard deviations)
Exposure value –2.6 stops   (aim for –2 to –3)
Exposure spread 0.45 stops
Area used for calculation 0.493 x 0.493
Camera settings Exposure time: 1/400   ISO: 400   F-number: 3.2
Focal length: 34.1 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.