Contrast ratio results for Acer

Contrast ratio 233:1
Monitor model Acer
Submitted 01 Mar 2020 21:31 CET, by 76.92.*.*
Camera model samsung SM-N960U
Processing remarks

Warning: image file 2: Overexposed. Please decrease the shutter time.

Black
Screen photo
Luminance 0.59 cd/m2
Luminance spread 0.25 cd/m2 (2 standard deviations)
Exposure value –2.71 stops   (aim for –2 to –3)
Exposure spread 0.63 stops
Area used for calculation 0.425 x 0.319
Camera settings Exposure time: 1/8   ISO: 400   F-number: 1.5
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 138 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –0.29 stops   (aim for –2 to –3)
Exposure spread 0.07 stops
Area used for calculation 0.425 x 0.319
Camera settings Exposure time: 1/350   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.