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

Contrast ratio of lg 29um58-p

Contrast ratio 380:1
Monitor model lg 29um58-p
Submitted 14 Jun 2017 11:44 CEST, by 80.26.*.*
Camera model Nikon D7100
Processing remarks

Note: image file 1: suggested exposure time: 4.1 s (Set EV to -0.9)
Note: image file 2: suggested exposure time: 1/92 s (Set EV to -0.9)

Black
Screen photo
[open image]
Luminance 0.11 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –0.64 stops   (aim for –2 to –3)
Exposure spread 0.36 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 15   ISO: 800   F-number: 5
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 1
White
Screen photo
[open image]
Luminance 43 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –0.62 stops   (aim for –2 to –3)
Exposure spread 0.25 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/25   ISO: 800   F-number: 5
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 1

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.