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

Contrast ratio results

Contrast ratio 12:1
Monitor model
Submitted 11 Dec 2019 18:58 CET, by 188.24.*.*
Camera model Nikon D5300
Processing remarks

Note: image file 1: suggested exposure time: 1/54 s (Set EV to -1.1)
Warning: Image F-number settings are not the same.

Black
Screen photo
[open image]
Luminance 16 cd/m2
Luminance spread 5 cd/m2 (2 standard deviations)
Exposure value –1.39 stops   (aim for –2 to –3)
Exposure spread 0.44 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/25   ISO: 400   F-number: 2.8
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 198 cd/m2
Luminance spread 27 cd/m2 (2 standard deviations)
Exposure value –0.79 stops   (aim for –2 to –3)
Exposure spread 0.2 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2
Focal length: 75 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.