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Contrast ratio results for BenQ G2220HDA

Contrast ratio 11249:1
Monitor model BenQ G2220HDA
Submitted 19 Dec 2020 23:26 CET, by 201.147.*.*
Camera model Xiaomi Redmi Note 9S
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 86.1 s (Set EV to +10.2)
Note: image file 2: suggested exposure time: 1/130 s (Set EV to -1.4)

Black
Screen photo
[open image]
Luminance 0 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –12.74 stops   (aim for –2 to –3)
Exposure spread 0.75 stops
Area used for calculation 0.501 x 0.282
Camera settings Exposure time: 1/14   ISO: 400   F-number: 1.8
Focal length: 26 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 16 cd/m2
Luminance spread 1 cd/m2 (2 standard deviations)
Exposure value –1.11 stops   (aim for –2 to –3)
Exposure spread 0.09 stops
Area used for calculation 0.501 x 0.282
Camera settings Exposure time: 1/50   ISO: 400   F-number: 1.8
Focal length: 26 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.