Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio of Dell P2414H

Contrast ratio 1071:1
Monitor model Dell P2414H
Submitted 13 Feb 2014 03:21 CET, by 178.36.*.*
Camera model Canon EOS 40D
Processing remarks

Note: image file 1: suggested exposure time: 2.8 s (Set EV to +1.5)

Black
Screen photo
[open image]
Luminance 0.04 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –3.98 stops   (aim for –2 to –3)
Exposure spread 1.01 stops
Area used for calculation 0.404 x 0.455
Camera settings Exposure time: 1   ISO: 1600   F-number: 3.5
Focal length: 29.1 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 45 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –2.54 stops   (aim for –2 to –3)
Exposure spread 0.31 stops
Area used for calculation 0.404 x 0.455
Camera settings Exposure time: 1/395   ISO: 1600   F-number: 3.5
Focal length: 29.1 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.