Contrast ratio results for 27GL83A - RGB

Contrast ratio 1324:1
Monitor model 27GL83A - RGB
Submitted 03 Jan 2020 23:39 CET, by 147.253.*.*
Camera model Google Pixel 3a
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 0.5 s (Set EV to +2.9)
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/120 s (Set EV to +2.2)
Warning: Image ISO settings are not the same.

Black
Screen photo
Luminance 0.08 cd/m2
Luminance spread 0.02 cd/m2 (2 standard deviations)
Exposure value –5.4 stops   (aim for –2 to –3)
Exposure spread 0.33 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/15   ISO: 1240   F-number: 1.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 105 cd/m2
Luminance spread 9 cd/m2 (2 standard deviations)
Exposure value –4.72 stops   (aim for –2 to –3)
Exposure spread 0.12 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/559   ISO: 56   F-number: 1.8
Focal length: 0 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.