Contrast ratio results

Contrast ratio 775:1
Monitor model
Submitted 21 Nov 2022 00:49 CET, by 86.180.*.*
Camera model Nikon D3300
Processing remarks

Note: image file 1: suggested exposure time: 4.5 s (Set EV to +0.5)
Note: image file 2: suggested exposure time: 1/170 s (Set EV to +0.2)

Black
Screen photo
Luminance 0.13 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –3.99 stops   (aim for –2 to –3)
Exposure spread 0.46 stops
Area used for calculation 0.542 x 0.608
Camera settings Exposure time: 1.6   ISO: 400   F-number: 4
Focal length: 39 mm   (35 mm equivalent)
Exposure compensation: -1
White
Screen photo
Luminance 104 cd/m2
Luminance spread 44 cd/m2 (2 standard deviations)
Exposure value –3.72 stops   (aim for –2 to –3)
Exposure spread 0.62 stops
Area used for calculation 0.542 x 0.608
Camera settings Exposure time: 1/400   ISO: 400   F-number: 4
Focal length: 39 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.