Contrast ratio results for tcl 55p737

Contrast ratio 24982:1
Monitor model tcl 55p737
Submitted 11 Jun 2022 01:04 CEST, by 80.240.*.*
Camera model realme 8
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 31.4 s (Set EV to +11.2)
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
image file 2: Warning: image includes screen edges or something that's not a monitor. Hold the camera close to the screen.

Black
Screen photo
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –14.7 stops   (aim for –2 to –3)
Exposure spread 1.23 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/150   ISO: 800   F-number: 1.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: -1
White
Screen photo
Luminance 49 cd/m2
Luminance spread 29 cd/m2 (2 standard deviations)
Exposure value –0.83 stops   (aim for –2 to –3)
Exposure spread 0.9 stops
Area used for calculation 0.528 x 0.528
Camera settings Exposure time: 1/250   ISO: 800   F-number: 1.8
Focal length: 0 mm   (35 mm equivalent)
Exposure compensation: -1

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.