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

Contrast ratio of LG

Contrast ratio 1:1
Monitor model LG
Submitted 23 Jan 2021 19:22 CET, by 223.18.*.*
Camera model Panasonic DMC-G7
Processing remarks


Black
Screen photo
[open image]
Luminance 323 cd/m2
Luminance spread 24 cd/m2 (2 standard deviations)
Exposure value –0.76 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/160   ISO: 400   F-number: 4
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 372 cd/m2
Luminance spread 52 cd/m2 (2 standard deviations)
Exposure value –1.88 stops   (aim for –2 to –3)
Exposure spread 0.2 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/400   ISO: 400   F-number: 4
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.