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

Contrast ratio results

Contrast ratio 1043:1
Monitor model
Submitted 07 Sep 2020 22:55 CEST, by 130.43.*.*
Camera model Canon EOS M50
Processing remarks


Black
Screen photo
[open image]
Luminance 0.41 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –2.38 stops   (aim for –2 to –3)
Exposure spread 0.05 stops
Area used for calculation 0.559 x 0.419
Camera settings Exposure time: 1.6   ISO: 100   F-number: 2
Focal length: 34.2 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 428 cd/m2
Luminance spread 37 cd/m2 (2 standard deviations)
Exposure value –2.03 stops   (aim for –2 to –3)
Exposure spread 0.12 stops
Area used for calculation 0.559 x 0.419
Camera settings Exposure time: 1/512   ISO: 100   F-number: 2
Focal length: 34.2 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.