Contrast ratio results for 27GL850

Contrast ratio 458:1
Monitor model 27GL850
Submitted 03 Dec 2019 21:15 CET, by 85.246.*.*
Camera model Nikon D3200
Processing remarks

Warning: image file 2: Overexposed. Please decrease the shutter time.

Black
Screen photo
Luminance 0.72 cd/m2
Luminance spread 0.33 cd/m2 (2 standard deviations)
Exposure value –1.86 stops   (aim for –2 to –3)
Exposure spread 0.68 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 0.5   ISO: 800   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 330 cd/m2
Luminance spread 13 cd/m2 (2 standard deviations)
Exposure value –0.34 stops   (aim for –2 to –3)
Exposure spread 0.05 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1/320   ISO: 800   F-number: 3.5
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.