Contrast ratio results for Samsung SH650

Contrast ratio 792:1
Monitor model Samsung SH650
Submitted 14 May 2020 23:15 CEST, by 86.22.*.*
Camera model Nikon D800
Processing remarks

Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
Luminance 0.53 cd/m2
Luminance spread 0.13 cd/m2 (2 standard deviations)
Exposure value –2 stops   (aim for –2 to –3)
Exposure spread 0.34 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 0.8   ISO: 800   F-number: 4
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 423 cd/m2
Luminance spread 61 cd/m2 (2 standard deviations)
Exposure value –2.01 stops   (aim for –2 to –3)
Exposure spread 0.21 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/1000   ISO: 800   F-number: 4
Focal length: 75 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.