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

Contrast ratio of BenQ GW2250

Contrast ratio 1553:1 (edge: 1467:1)
Monitor model BenQ GW2250
Submitted 02 May 2017 08:51 CEST, by 96.52.*.*
Camera model Nikon D750
Processing remarks


Black
Screen photo
[open image]
Luminance 0.15 cd/m2
Luminance spread 0.13 cd/m2 (2 standard deviations)
Exposure value –2.23 stops   (aim for –2 to –3)
Exposure spread 1.43 stops
Area used for calculation 0.695 x 0.78
Camera settings Exposure time: 5   ISO: 100   F-number: 2
Focal length: 50 mm   (35 mm equivalent)
Exposure compensation: 1
White
Screen photo
[open image]
Luminance 226 cd/m2
Luminance spread 40 cd/m2 (2 standard deviations)
Exposure value –1.92 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.695 x 0.78
Camera settings Exposure time: 1/250   ISO: 100   F-number: 2
Focal length: 50 mm   (35 mm equivalent)
Exposure compensation: 1
Black at screen edge
Screen photo
[open image]
Luminance 0.15 cd/m2
Luminance spread 0.14 cd/m2 (2 standard deviations)
Exposure value –2.47 stops   (aim for –2 to –3)
Exposure spread 1.47 stops
Area used for calculation 0.695 x 0.78
Camera settings Exposure time: 4   ISO: 100   F-number: 2
Focal length: 50 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.