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

Contrast ratio results for U2311H

Contrast ratio 855:1
Monitor model U2311H
Submitted 01 Aug 2013 06:46 CEST, by 67.81.*.*
Camera model Olympus XZ-2
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 6.6 s (Set EV to +2.7)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.05 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –5.21 stops   (aim for –2 to –3)
Exposure spread 1.74 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 39 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –2.8 stops   (aim for –2 to –3)
Exposure spread 0.35 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/160   ISO: 400   F-number: 2.8
Focal length: 28 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.