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

Contrast ratio results

Contrast ratio 1098:1
Monitor model
Submitted 26 Sep 2021 05:10 CEST, by 79.185.*.*
Camera model Xiaomi Mi MIX 3 5G
Processing remarks


Black
Screen photo
[open image]
Luminance 0.12 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –1.51 stops   (aim for –2 to –3)
Exposure spread 0.23 stops
Area used for calculation 0.303 x 0.303
Camera settings Exposure time: 8   ISO: 100   F-number: 1.8
Focal length: 21 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 134 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –2.38 stops   (aim for –2 to –3)
Exposure spread 0.07 stops
Area used for calculation 0.303 x 0.303
Camera settings Exposure time: 1/250   ISO: 100   F-number: 1.8
Focal length: 21 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.