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

Contrast ratio of Samsung

Contrast ratio 2138:1 (edge: 1413:1)
Monitor model Samsung
Submitted 25 Jul 2017 21:56 CEST, by 188.82.*.*
Camera model Nikon D5000
Processing remarks


Black
Screen photo
[open image]
Luminance 0.15 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –2.76 stops   (aim for –2 to –3)
Exposure spread 1.1 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 2.5   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 331 cd/m2
Luminance spread 34 cd/m2 (2 standard deviations)
Exposure value –1.66 stops   (aim for –2 to –3)
Exposure spread 0.15 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/400   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.23 cd/m2
Luminance spread 0.12 cd/m2 (2 standard deviations)
Exposure value –2.16 stops   (aim for –2 to –3)
Exposure spread 0.79 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 2.5   ISO: 400   F-number: 3.5
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.