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

Contrast ratio results

Contrast ratio 329:1
Monitor model
Submitted 31 Aug 2015 17:06 CEST, by 89.217.*.*
Camera model Sony ILCE-5100
Processing remarks

Note: image file 2: suggested exposure time: 1/96 s (Set EV to +2.4)

Black
Screen photo
[open image]
Luminance 0.18 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –2.96 stops   (aim for –2 to –3)
Exposure spread 0.44 stops
Area used for calculation 0.93 x 1
Camera settings Exposure time: 2.5   ISO: 400   F-number: 4
Focal length: 67 mm   (35 mm equivalent)
Exposure compensation: 1.3
White
Screen photo
[open image]
Luminance 58 cd/m2
Luminance spread 21 cd/m2 (2 standard deviations)
Exposure value –3.56 stops   (aim for –2 to –3)
Exposure spread 0.52 stops
Area used for calculation 0.93 x 1
Camera settings Exposure time: 1/200   ISO: 400   F-number: 4
Focal length: 67 mm   (35 mm equivalent)
Exposure compensation: 1.3

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.