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

Contrast ratio of LG

Contrast ratio 734:1
Monitor model LG
Submitted 07 Dec 2019 00:12 CET, by 95.76.*.*
Camera model Canon EOS 700D
Processing remarks

Note: image file 1: suggested exposure time: 1.8 s (Set EV to -1.2)
Note: image file 2: suggested exposure time: 1/410 s (Set EV to -1.3)

Black
Screen photo
[open image]
Luminance 0.45 cd/m2
Luminance spread 0.08 cd/m2 (2 standard deviations)
Exposure value –1.33 stops   (aim for –2 to –3)
Exposure spread 0.25 stops
Area used for calculation 0.396 x 0.445
Camera settings Exposure time: 4   ISO: 400   F-number: 4.6
Focal length: 28.5 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 331 cd/m2
Luminance spread 40 cd/m2 (2 standard deviations)
Exposure value –1.18 stops   (aim for –2 to –3)
Exposure spread 0.17 stops
Area used for calculation 0.396 x 0.445
Camera settings Exposure time: 1/166   ISO: 400   F-number: 4.6
Focal length: 28.5 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.