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

Contrast ratio results

Contrast ratio 2015:1
Monitor model
Submitted 03 Mar 2023 23:50 CET, by 76.138.*.*
Camera model Google Pixel 5
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: 6.6 s (Set EV to +3.5)
Warning: image file 2: automatic white balance can cause inaccuracies.
Warning: Image ISO settings are not the same.
Warning: Image F-number settings are not the same.
Warning: Image focal lengths/zoom levels are not the same.

Black
Screen photo
[open image]
Luminance 0.13 cd/m2
Luminance spread 0.27 cd/m2 (2 standard deviations)
Exposure value –5.97 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.212 x 0.283
Camera settings Exposure time: 0.6   ISO: 84   F-number: 2.2
Focal length: 16 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 264 cd/m2
Luminance spread 35 cd/m2 (2 standard deviations)
Exposure value –0.83 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 0.358 x 0.477
Camera settings Exposure time: 1/236   ISO: 124   F-number: 1.7
Focal length: 27 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.