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

Contrast ratio results

Contrast ratio 15370:1
Monitor model
Submitted 02 Jan 2024 05:23 CET, by 159.118.*.*
Camera model samsung Galaxy S23
Processing remarks

Note: image file 2: suggested exposure time: 1/390 s (Set EV to -0.8)

Black
Screen photo
[open image]
Luminance 0.01 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –2.88 stops   (aim for –2 to –3)
Exposure spread 0.35 stops
Area used for calculation 0.293 x 0.475
Camera settings Exposure time: 30   ISO: 100   F-number: 1.8
Focal length: 23 mm   (35 mm equivalent)
Exposure compensation: -1.3
White
Screen photo
[open image]
Luminance 192 cd/m2
Luminance spread 19 cd/m2 (2 standard deviations)
Exposure value –1.37 stops   (aim for –2 to –3)
Exposure spread 0.14 stops
Area used for calculation 0.293 x 0.475
Camera settings Exposure time: 1/180   ISO: 100   F-number: 1.8
Focal length: 23 mm   (35 mm equivalent)
Exposure compensation: 0.3

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.