Contrast ratio results

Contrast ratio 1799:1
Monitor model
Submitted 17 Aug 2021 17:52 CEST, by 94.159.*.*
Camera model samsung SM-G960F
Processing remarks

Note: image file 1: suggested exposure time: 1.3 s (Set EV to +1.4)

Black
Screen photo
Luminance 0.07 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –3.88 stops   (aim for –2 to –3)
Exposure spread 0.98 stops
Area used for calculation 0.376 x 0.376
Camera settings Exposure time: 0.5   ISO: 400   F-number: 1.5
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 117 cd/m2
Luminance spread 10 cd/m2 (2 standard deviations)
Exposure value –1.03 stops   (aim for –2 to –3)
Exposure spread 0.13 stops
Area used for calculation 0.376 x 0.376
Camera settings Exposure time: 1/498   ISO: 400   F-number: 1.5
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.