Contrast ratio results for Dell

Contrast ratio 868:1
Monitor model Dell
Submitted 25 Jun 2019 07:40 CEST, by 150.107.*.*
Camera model samsung SM-G960F
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 0.5 s (Set EV to +5.5)

Black
Screen photo
Luminance 0.42 cd/m2
Luminance spread 1.6 cd/m2 (2 standard deviations)
Exposure value –8.04 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.345 x 0.46
Camera settings Exposure time: 1/90   ISO: 400   F-number: 2.4
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 366 cd/m2
Luminance spread 49 cd/m2 (2 standard deviations)
Exposure value –0.75 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 0.345 x 0.46
Camera settings Exposure time: 1/498   ISO: 400   F-number: 2.4
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
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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.