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

Contrast ratio of BENQ GW2470HL

Contrast ratio 2082:1
Monitor model BENQ GW2470HL
Submitted 01 Mar 2019 10:07 CET, by 86.202.*.*
Camera model Samsung Techwin Samsung D70 / D75 / S730
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.02 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –2.67 stops   (aim for –2 to –3)
Exposure spread 1.15 stops
Area used for calculation 0.506 x 0.506
Camera settings Exposure time: 2   ISO: 400   F-number: 1
Focal length: 35 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 35 cd/m2
Luminance spread 4 cd/m2 (2 standard deviations)
Exposure value –1.15 stops   (aim for –2 to –3)
Exposure spread 0.15 stops
Area used for calculation 0.506 x 0.506
Camera settings Exposure time: 1/362   ISO: 400   F-number: 1
Focal length: 35 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.