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

Contrast ratio results

Contrast ratio 312:1
Monitor model
Submitted 09 Jan 2025 16:12 CET, by 91.18.*.*
Camera model samsung Galaxy S24
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 2.8 s (Set EV to +1.5)
Warning: image file 2: automatic white balance can cause inaccuracies.
Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/7 s (Set EV to -2.5)
Warning: Image ISO settings are not the same.

Black
Screen photo
[open image]
Luminance 0.02 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –4.29 stops   (aim for –2 to –3)
Exposure spread 0.82 stops
Area used for calculation 0.305 x 0.406
Camera settings Exposure time: 0.8   ISO: 800   F-number: 1.8
Focal length: 23 mm   (35 mm equivalent)
Exposure compensation: -0.3
White
Screen photo
[open image]
Luminance 7 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –0.01 stops   (aim for –2 to –3)
Exposure spread -0 stops
Area used for calculation 0.305 x 0.406
Camera settings Exposure time: 0.8   ISO: 50   F-number: 1.8
Focal length: 23 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.