Contrast ratio results

Contrast ratio 1614:1
Monitor model
Submitted 02 Feb 2020 11:16 CET, by 67.61.*.*
Camera model Canon PowerShot SX530 HS
Processing remarks

Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
Luminance 0.08 cd/m2
Luminance spread 0.08 cd/m2 (2 standard deviations)
Exposure value –2.9 stops   (aim for –2 to –3)
Exposure spread 1.41 stops
Area used for calculation 0.349 x 0.465
Camera settings Exposure time: 1   ISO: 1600   F-number: 3.4
Focal length: 26.3 mm   (35 mm equivalent)
Exposure compensation: 4
White
Screen photo
Luminance 134 cd/m2
Luminance spread 22 cd/m2 (2 standard deviations)
Exposure value –1.55 stops   (aim for –2 to –3)
Exposure spread 0.24 stops
Area used for calculation 0.349 x 0.465
Camera settings Exposure time: 1/636   ISO: 1600   F-number: 3.4
Focal length: 26.3 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.