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

Contrast ratio results

Contrast ratio 674:1
Monitor model
Submitted 16 Aug 2021 20:25 CEST, by 80.186.*.*
Camera model Fujifilm FinePix HS20EXR
Processing remarks

Note: image file 2: suggested exposure time: 1/330 s (Set EV to -1.4)

Black
Screen photo
[open image]
Luminance 0.24 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –1.86 stops   (aim for –2 to –3)
Exposure spread 0.57 stops
Area used for calculation 0.646 x 0.861
Camera settings Exposure time: 3.2   ISO: 400   F-number: 3.6
Focal length: 48.7 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 161 cd/m2
Luminance spread 43 cd/m2 (2 standard deviations)
Exposure value –1.14 stops   (aim for –2 to –3)
Exposure spread 0.39 stops
Area used for calculation 0.646 x 0.861
Camera settings Exposure time: 1/128   ISO: 400   F-number: 3.6
Focal length: 48.7 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.