Contrast ratio results

Contrast ratio 37:1
Monitor model
Submitted 15 Apr 2021 19:36 CEST, by 5.95.*.*
Camera model Panasonic DC-FZ82
Processing remarks

Warning: image file 1: camera was zoomed in too much.
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 1: Overexposed. Please decrease the shutter time.
Warning: image file 2: camera was zoomed in too much.
Warning: image file 2: automatic white balance can cause inaccuracies.
Warning: image file 3: camera was zoomed in too much.
Warning: image file 3: automatic white balance can cause inaccuracies.
image file 3: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.
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.
Warning: image file 3 is too bright to be a dark photo. Maybe you mixed up the files?

Black
Screen photo
Luminance 0.82 cd/m2
Luminance spread 2.54 cd/m2 (2 standard deviations)
Exposure value –2.79 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/5   ISO: 1600   F-number: 4.6
Focal length: 94 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 30 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –2.51 stops   (aim for –2 to –3)
Exposure spread 0.32 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/80   ISO: 800   F-number: 4.5
Focal length: 91 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
Luminance 15 cd/m2
Luminance spread 29 cd/m2 (2 standard deviations)
Exposure value –2.57 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/80   ISO: 1600   F-number: 4.5
Focal length: 91 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.