Contrast ratio results for BenQ XL2411P

Contrast ratio 2:1
Monitor model BenQ XL2411P
Submitted 09 Dec 2019 15:20 CET, by 83.245.*.*
Camera model HUAWEI COR-L29
Processing remarks

Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 3: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?

Black
Screen photo
Luminance 2.04737e+08 cd/m2
Luminance spread 1.05836e+08 cd/m2 (2 standard deviations)
Exposure value –2.34 stops   (aim for –2 to –3)
Exposure spread 0.76 stops
Area used for calculation 0.346 x 0.542
Camera settings Exposure time: 1/99996336   ISO: 400   F-number: 2.2
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 4.38893e+08 cd/m2
Luminance spread 1.2556e+08 cd/m2 (2 standard deviations)
Exposure value –1.24 stops   (aim for –2 to –3)
Exposure spread 0.42 stops
Area used for calculation 0.346 x 0.542
Camera settings Exposure time: 1/99996336   ISO: 400   F-number: 2.2
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
Luminance 1.72018e+08 cd/m2
Luminance spread 1.0033e+08 cd/m2 (2 standard deviations)
Exposure value –2.59 stops   (aim for –2 to –3)
Exposure spread 0.87 stops
Area used for calculation 0.346 x 0.542
Camera settings Exposure time: 1/99996336   ISO: 400   F-number: 2.2
Focal length: 27 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.