Contrast ratio results

Contrast ratio 3:1
Monitor model
Submitted 15 Nov 2022 07:55 CET, by 75.83.*.*
Camera model Sony DSC-RX1R
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 2: automatic white balance can cause inaccuracies.
Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/150 s (Set EV to -2.3)

Black
Screen photo
Luminance 32 cd/m2
Luminance spread 3 cd/m2 (2 standard deviations)
Exposure value –1.94 stops   (aim for –2 to –3)
Exposure spread 0.15 stops
Area used for calculation 0.486 x 0.547
Camera settings Exposure time: 1/30   ISO: 100   F-number: 2.2
Focal length: 35 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 106 cd/m2
Luminance spread 5 cd/m2 (2 standard deviations)
Exposure value –0.22 stops   (aim for –2 to –3)
Exposure spread 0.07 stops
Area used for calculation 0.486 x 0.547
Camera settings Exposure time: 1/30   ISO: 100   F-number: 2.2
Focal length: 35 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.