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

Contrast ratio of ViewSonic VX2758-2KP-MHD

Contrast ratio 1016:1
Monitor model ViewSonic VX2758-2KP-MHD
Submitted 14 Dec 2019 23:27 CET, by 146.212.*.*
Camera model Canon PowerShot SX40 HS
Processing remarks


Black
Screen photo
[open image]
Luminance 0.16 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –3.24 stops   (aim for –2 to –3)
Exposure spread 1.03 stops
Area used for calculation 0.347 x 0.463
Camera settings Exposure time: 1   ISO: 400   F-number: 2.7
Focal length: 26.2 mm   (35 mm equivalent)
Exposure compensation: 4
White
Screen photo
[open image]
Luminance 167 cd/m2
Luminance spread 18 cd/m2 (2 standard deviations)
Exposure value –2.22 stops   (aim for –2 to –3)
Exposure spread 0.15 stops
Area used for calculation 0.347 x 0.463
Camera settings Exposure time: 1/501   ISO: 400   F-number: 2.7
Focal length: 26.2 mm   (35 mm equivalent)
Exposure compensation: -1

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.