Contrast ratio results

Contrast ratio 82761:1
Monitor model
Submitted 12 Aug 2018 09:02 CEST, by 107.4.*.*
Camera model Canon PowerShot ELPH 360 HS
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 1770.9 s (Set EV to +10.8)
Warning: Image ISO settings are not the same.

Black
Screen photo
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –13.29 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 0.361 x 0.361
Camera settings Exposure time: 1   ISO: 80   F-number: 3.6
Focal length: 25 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 114 cd/m2
Luminance spread 10 cd/m2 (2 standard deviations)
Exposure value –0.6 stops   (aim for –2 to –3)
Exposure spread 0.12 stops
Area used for calculation 0.361 x 0.361
Camera settings Exposure time: 1/501   ISO: 3200   F-number: 3.6
Focal length: 25 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.