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

Contrast ratio results for LG

Contrast ratio 65:1
Monitor model LG
Submitted 28 Jan 2020 01:17 CET, by 190.246.*.*
Camera model Huawei Nexus 6P
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 48.1 s (Set EV to +1.7)
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Note: image file 2: suggested exposure time: 25.5 s (Set EV to -1.2)
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –4.19 stops   (aim for –2 to –3)
Exposure spread 1.09 stops
Area used for calculation 0.528 x 0.704
Camera settings Exposure time: 14.9   ISO: 3760   F-number: 2
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 0.02 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –1.27 stops   (aim for –2 to –3)
Exposure spread 0.73 stops
Area used for calculation 0.528 x 0.704
Camera settings Exposure time: 59.7   ISO: 109   F-number: 2
Focal length: 0 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.