Contrast ratio results

Contrast ratio 10042:1
Monitor model
Submitted 21 Feb 2017 03:18 CET, by 212.142.*.*
Camera model SAMSUNG NX1000
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: Image ISO settings are not the same.
Warning: Image F-number settings are not the same.
Warning: Image focal lengths/zoom levels are not the same.

Black
Screen photo
Luminance 0.02 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –2.01 stops   (aim for –2 to –3)
Exposure spread 0.42 stops
Area used for calculation 0.458 x 0.516
Camera settings Exposure time: 1   ISO: 12800   F-number: 3.5
Focal length: 33 mm   (35 mm equivalent)
Exposure compensation: 0.6
White
Screen photo
Luminance 204 cd/m2
Luminance spread 36 cd/m2 (2 standard deviations)
Exposure value –0.71 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.556 x 0.625
Camera settings Exposure time: 1/250   ISO: 1600   F-number: 5
Focal length: 40 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.