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

Contrast ratio of Dell U2311H

Contrast ratio 1443:1
Monitor model Dell U2311H
Submitted 26 Jul 2019 17:18 CEST, by 178.157.*.*
Camera model RICOH IMAGING COMPANY LTD. PENTAX K-3
Processing remarks

Note: image file 1: suggested exposure time: 2.6 s (Set EV to +1.4)

Black
Screen photo
[open image]
Luminance 0.11 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –3.89 stops   (aim for –2 to –3)
Exposure spread 0.82 stops
Area used for calculation 0.333 x 0.375
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 163 cd/m2
Luminance spread 18 cd/m2 (2 standard deviations)
Exposure value –2.04 stops   (aim for –2 to –3)
Exposure spread 0.16 stops
Area used for calculation 0.333 x 0.375
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 24 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.