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

Contrast ratio results

Contrast ratio 816:1 (edge: 813:1)
Monitor model
Submitted 19 Nov 2014 12:12 CET, by 140.114.*.*
Camera model Sony DSC-HX100V
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 3: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).

Black
Screen photo
[open image]
Luminance 0.28 cd/m2
Luminance spread 0.42 cd/m2 (2 standard deviations)
Exposure value –2.58 stops   (aim for –2 to –3)
Exposure spread 2.8 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 1.7
White
Screen photo
[open image]
Luminance 229 cd/m2
Luminance spread 37 cd/m2 (2 standard deviations)
Exposure value –1.55 stops   (aim for –2 to –3)
Exposure spread 0.23 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0.7
Black at screen edge
Screen photo
[open image]
Luminance 0.28 cd/m2
Luminance spread 0.23 cd/m2 (2 standard deviations)
Exposure value –2.19 stops   (aim for –2 to –3)
Exposure spread 1.27 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1.3   ISO: 400   F-number: 2.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 2

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.