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Contrast ratio results for PG279QM

Contrast ratio 671:1
Monitor model PG279QM
Submitted 29 Jul 2022 19:18 CEST, by 91.80.*.*
Camera model Xiaomi M2011K2G
Processing remarks

image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 1.4 s (Set EV to +2.8)
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.15 cd/m2
Luminance spread 0.13 cd/m2 (2 standard deviations)
Exposure value –5.33 stops   (aim for –2 to –3)
Exposure spread 1.31 stops
Area used for calculation 0.203 x 0.338
Camera settings Exposure time: 1/5   ISO: 400   F-number: 2.4
Focal length: 16 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 103 cd/m2
Luminance spread 13 cd/m2 (2 standard deviations)
Exposure value –2.58 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 0.203 x 0.338
Camera settings Exposure time: 1/500   ISO: 400   F-number: 2.4
Focal length: 16 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.