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Contrast ratio results for Sam sung SyncMaster 020 Nx

Contrast ratio 2:1
Monitor model Sam sung SyncMaster 020 Nx
Submitted 06 Nov 2017 19:39 CET, by 99.236.*.*
Camera model HTC Desire 526G dual sim
Processing remarks

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: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
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 2: Overexposed. Please decrease the shutter time.
Warning: Image ISO settings are not the same.
Warning: Image F-number settings are not the same.
Warning: Images were taken with different cameras.
Warning: Image focal lengths/zoom levels are not the same.

Black
Screen photo
[open image]
Luminance 112 cd/m2
Luminance spread 331 cd/m2 (2 standard deviations)
Exposure value –2.63 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.714 x 0.543
Camera settings Exposure time: 1/320   ISO: 800   F-number: 4.5
Focal length: 44 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 220 cd/m2
Luminance spread 338 cd/m2 (2 standard deviations)
Exposure value –1.74 stops   (aim for –2 to –3)
Exposure spread 2.93 stops
Area used for calculation 0.528 x 0.348
Camera settings Exposure time: 1/146   ISO: 82   F-number: 2.2
Focal length: 0 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.