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

Contrast ratio of AOC 2590G4

Contrast ratio 942:1
Monitor model AOC 2590G4
Submitted 05 Jan 2019 13:49 CET, by 82.29.*.*
Camera model Canon EOS 1200D
Processing remarks


Black
Screen photo
[open image]
Luminance 0.32 cd/m2
Luminance spread 0.09 cd/m2 (2 standard deviations)
Exposure value –2.83 stops   (aim for –2 to –3)
Exposure spread 0.43 stops
Area used for calculation 0.764 x 0.859
Camera settings Exposure time: 1   ISO: 200   F-number: 2.3
Focal length: 55 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 299 cd/m2
Luminance spread 46 cd/m2 (2 standard deviations)
Exposure value –1.58 stops   (aim for –2 to –3)
Exposure spread 0.22 stops
Area used for calculation 0.764 x 0.859
Camera settings Exposure time: 1/395   ISO: 200   F-number: 2.3
Focal length: 55 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.