Contrast ratio results

Contrast ratio 2.01162e+10:1
Monitor model
Submitted 13 Aug 2020 12:47 CEST, by 77.13.*.*
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: 182025340.8 s (Set EV to +24.5)
Warning: image file 2: camera was zoomed in too much.
Note: image file 2: suggested exposure time: 1/110 s (Set EV to +0.1)

Black
Screen photo
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –25.03 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: 2
White
Screen photo
Luminance 524 cd/m2
Luminance spread 31 cd/m2 (2 standard deviations)
Exposure value –0.62 stops   (aim for –2 to –3)
Exposure spread 0.08 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/30   ISO: 100   F-number: 5.6
Focal length: 82 mm   (35 mm equivalent)
Exposure compensation: 2
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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.