Contrast ratio results

Contrast ratio 617:1
Monitor model
Submitted 03 Nov 2020 19:12 CET, by 84.9.*.*
Camera model Sony ILCE-6500
Processing remarks

Note: image file 1: suggested exposure time: 2.5 s (Set EV to +1.3)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
Luminance 0.24 cd/m2
Luminance spread 0.25 cd/m2 (2 standard deviations)
Exposure value –3.85 stops   (aim for –2 to –3)
Exposure spread 1.69 stops
Area used for calculation 0.333 x 0.375
Camera settings Exposure time: 1   ISO: 400   F-number: 4
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 146 cd/m2
Luminance spread 33 cd/m2 (2 standard deviations)
Exposure value –3.22 stops   (aim for –2 to –3)
Exposure spread 0.32 stops
Area used for calculation 0.335 x 0.372
Camera settings Exposure time: 1/400   ISO: 400   F-number: 4
Focal length: 24 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.