Contrast ratio results for BenQ XL2411T

Contrast ratio 682:1
Monitor model BenQ XL2411T
Submitted 13 Jul 2016 11:45 CEST, by 37.157.*.*
Camera model HUAWEI KIW-L21
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 1.8 s (Set EV to +6.2)
Note: image file 2: suggested exposure time: 1/400 s (Set EV to -1.7)
Warning: Image ISO settings are not the same.

Black
Screen photo
Luminance 0.09 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –8.68 stops   (aim for –2 to –3)
Exposure spread 0.68 stops
Area used for calculation 0.368 x 0.509
Camera settings Exposure time: 1/40   ISO: 383   F-number: 2
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 59 cd/m2
Luminance spread 13 cd/m2 (2 standard deviations)
Exposure value –0.76 stops   (aim for –2 to –3)
Exposure spread 0.31 stops
Area used for calculation 0.38 x 0.462
Camera settings Exposure time: 1/120   ISO: 407   F-number: 2
Focal length: 28 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.