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

Contrast ratio results

Contrast ratio 507:1 (edge: 719:1)
Monitor model
Submitted 13 Aug 2021 10:32 CEST, by 80.186.*.*
Camera model Fujifilm FinePix HS20EXR
Processing remarks


Black
Screen photo
[open image]
Luminance 0.23 cd/m2
Luminance spread 0.14 cd/m2 (2 standard deviations)
Exposure value –1.89 stops   (aim for –2 to –3)
Exposure spread 0.9 stops
Area used for calculation 0.668 x 0.891
Camera settings Exposure time: 3.2   ISO: 400   F-number: 3.6
Focal length: 50.4 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 118 cd/m2
Luminance spread 27 cd/m2 (2 standard deviations)
Exposure value –3.28 stops   (aim for –2 to –3)
Exposure spread 0.33 stops
Area used for calculation 0.668 x 0.891
Camera settings Exposure time: 1/416   ISO: 400   F-number: 3.6
Focal length: 50.4 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.16 cd/m2
Luminance spread 0.08 cd/m2 (2 standard deviations)
Exposure value –2.39 stops   (aim for –2 to –3)
Exposure spread 0.71 stops
Area used for calculation 0.668 x 0.891
Camera settings Exposure time: 3.2   ISO: 400   F-number: 3.6
Focal length: 50.4 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.