Contrast ratio results for DELL 1704FPT

Contrast ratio 448:1
Monitor model DELL 1704FPT
Submitted 10 Jan 2011 07:08 CET, by 76.16.*.*
Camera model Olympus E-450
Processing remarks

Warning: Image F-number settings are not the same.

Black
Screen photo
Luminance 0.27 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –3.27 stops   (aim for –2 to –3)
Exposure spread 0.22 stops
Area used for calculation 0.724 x 0.724
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
Focal length: 50.1 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 121 cd/m2
Luminance spread 35 cd/m2 (2 standard deviations)
Exposure value –2.14 stops   (aim for –2 to –3)
Exposure spread 0.42 stops
Area used for calculation 0.724 x 0.724
Camera settings Exposure time: 1/320   ISO: 400   F-number: 2.8
Focal length: 50.1 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.