Contrast ratio results for samsung 794s

Contrast ratio 5:1 (edge: 14:1)
Monitor model samsung 794s
Submitted 01 Nov 2021 06:06 CET, by 138.97.*.*
Camera model samsung SM-G600FY
Processing remarks

Warning: image file 1: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 1: automatic white balance can cause inaccuracies.
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: Overexposed. Please decrease the shutter time.
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
Warning: image file 3: automatic white balance can cause inaccuracies.
image file 3: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.

Black
Screen photo
Luminance 1124 cd/m2
Luminance spread 2573 cd/m2 (2 standard deviations)
Exposure value –2.16 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.305 x 0.407
Camera settings Exposure time: 1/609   ISO: 50   F-number: 2.2
Focal length: 23 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 5277 cd/m2
Luminance spread 7717 cd/m2 (2 standard deviations)
Exposure value –1.09 stops   (aim for –2 to –3)
Exposure spread 2.69 stops
Area used for calculation 0.305 x 0.407
Camera settings Exposure time: 1/1353   ISO: 50   F-number: 2.2
Focal length: 23 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
Luminance 381 cd/m2
Luminance spread 350 cd/m2 (2 standard deviations)
Exposure value –2.1 stops   (aim for –2 to –3)
Exposure spread 1.43 stops
Area used for calculation 0.305 x 0.407
Camera settings Exposure time: 1/197   ISO: 50   F-number: 2.2
Focal length: 23 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.