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Contrast ratio results for Dell U4320Q 24mm

Contrast ratio 1904:1
Monitor model Dell U4320Q 24mm
Submitted 18 Apr 2020 00:53 CEST, by 82.136.*.*
Camera model Panasonic DMC-GX80
Processing remarks

image file 1: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 13.9 s (Set EV to +4.8)

Black
Screen photo
[open image]
Luminance 0.04 cd/m2
Luminance spread 0.16 cd/m2 (2 standard deviations)
Exposure value –7.29 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.347 x 0.346
Camera settings Exposure time: 0.5   ISO: 200   F-number: 2.8
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 81 cd/m2
Luminance spread 17 cd/m2 (2 standard deviations)
Exposure value –1.72 stops   (aim for –2 to –3)
Exposure spread 0.29 stops
Area used for calculation 0.347 x 0.346
Camera settings Exposure time: 1/80   ISO: 200   F-number: 2.8
Focal length: 24 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.