Contrast ratio results

Contrast ratio 1.78981e+10:1
Monitor model
Submitted 10 Aug 2020 23:59 CEST, by 89.12.*.*
Camera model Sony NEX-5N
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 360017919.4 s (Set EV to +26.5)
Warning: image file 2: camera was zoomed in too much.
Note: image file 2: suggested exposure time: 1/50 s (Set EV to +0.1)

Black
Screen photo
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –26.02 stops   (aim for –2 to –3)
Exposure spread 4.25 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 30   ISO: 100   F-number: 5.6
Focal length: 82 mm   (35 mm equivalent)
Exposure compensation: 3
White
Screen photo
Luminance 236 cd/m2
Luminance spread 15 cd/m2 (2 standard deviations)
Exposure value –0.56 stops   (aim for –2 to –3)
Exposure spread 0.09 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/13   ISO: 100   F-number: 5.6
Focal length: 82 mm   (35 mm equivalent)
Exposure compensation: 2

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.