Contrast ratio results for XB271HU

Contrast ratio 2241:1
Monitor model XB271HU
Submitted 20 Oct 2019 03:00 CEST, by 50.34.*.*
Camera model samsung SM-G960U
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 3.0 s (Set EV to +1.6)

Black
Screen photo
Luminance 0.07 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –4.07 stops   (aim for –2 to –3)
Exposure spread 0.99 stops
Area used for calculation 0.376 x 0.376
Camera settings Exposure time: 1   ISO: 400   F-number: 2.4
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 164 cd/m2
Luminance spread 12 cd/m2 (2 standard deviations)
Exposure value –1.9 stops   (aim for –2 to –3)
Exposure spread 0.11 stops
Area used for calculation 0.376 x 0.376
Camera settings Exposure time: 1/500   ISO: 400   F-number: 2.4
Focal length: 26 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.