Contrast ratio results for acer/p243w

Contrast ratio 949:1
Monitor model acer/p243w
Submitted 06 Jul 2008 02:18 CEST, by 82.235.*.*
Camera model Olympus C-5000Z
Processing remarks

Warning: Image ISO settings are not the same.

Black
Screen photo
Luminance 0.5 cd/m2
Luminance spread 0.12 cd/m2 (2 standard deviations)
Exposure value –2.57 stops   (aim for –2 to –3)
Exposure spread 0.35 stops
Area used for calculation 0.55 x 0.55
Camera settings Exposure time: 0.7   ISO: 320   F-number: 2.8
Focal length: 38.1 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 479 cd/m2
Luminance spread 75 cd/m2 (2 standard deviations)
Exposure value –2.12 stops   (aim for –2 to –3)
Exposure spread 0.23 stops
Area used for calculation 0.55 x 0.55
Camera settings Exposure time: 1/248   ISO: 80   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.