Contrast ratio results for BenQ G2420HD

Contrast ratio 8.05433e+08:1
Monitor model BenQ G2420HD
Submitted 14 May 2020 21:45 CEST, by 86.22.*.*
Camera model Nikon D800
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 19789567.9 s (Set EV to +29.1)

Black
Screen photo
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –32.64 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.695 x 0.781
Camera settings Exposure time: 1/60   ISO: 400   F-number: 8
Focal length: 50 mm   (35 mm equivalent)
Exposure compensation: -1
White
Screen photo
Luminance 98 cd/m2
Luminance spread 59 cd/m2 (2 standard deviations)
Exposure value –3.06 stops   (aim for –2 to –3)
Exposure spread 0.89 stops
Area used for calculation 0.695 x 0.781
Camera settings Exposure time: 1/60   ISO: 400   F-number: 8
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.