Contrast ratio results

Contrast ratio 1714:1
Monitor model
Submitted 17 Jul 2019 07:21 CEST, by 107.3.*.*
Camera model Canon EOS 5D Mark II
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 2: camera was zoomed in too much.
Warning: image file 2: automatic white balance can cause inaccuracies.
Warning: image file 2: Overexposed. Please decrease the shutter time.

Black
Screen photo
Luminance 0.14 cd/m2
Luminance spread 0.08 cd/m2 (2 standard deviations)
Exposure value –2.61 stops   (aim for –2 to –3)
Exposure spread 0.88 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1   ISO: 200   F-number: 1.4
Focal length: 143 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 235 cd/m2
Luminance spread 44 cd/m2 (2 standard deviations)
Exposure value –0.5 stops   (aim for –2 to –3)
Exposure spread 0.27 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/395   ISO: 200   F-number: 1.4
Focal length: 143 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.