Contrast ratio results for Dell U2412M

Contrast ratio 1:1
Monitor model Dell U2412M
Submitted 25 Jan 2019 19:29 CET, by 81.159.*.*
Camera model Nikon D5100
Processing remarks

image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.

Black
Screen photo
Luminance 123 cd/m2
Luminance spread 247 cd/m2 (2 standard deviations)
Exposure value –2.45 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 167 cd/m2
Luminance spread 163 cd/m2 (2 standard deviations)
Exposure value –2.01 stops   (aim for –2 to –3)
Exposure spread 1.55 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/400   ISO: 400   F-number: 2.8
Focal length: 75 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.