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

Contrast ratio results

Contrast ratio 2656:1
Monitor model
Submitted 21 Nov 2020 00:59 CET, by 47.134.*.*
Camera model samsung SM-G960U
Processing remarks

Note: image file 1: suggested exposure time: 1.4 s (Set EV to +1.5)
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
[open image]
Luminance 0.06 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –3.99 stops   (aim for –2 to –3)
Exposure spread 0.5 stops
Area used for calculation 0.345 x 0.46
Camera settings Exposure time: 0.5   ISO: 400   F-number: 1.5
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 161 cd/m2
Luminance spread 12 cd/m2 (2 standard deviations)
Exposure value –1.17 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.345 x 0.46
Camera settings Exposure time: 1/750   ISO: 400   F-number: 1.5
Focal length: 26 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.