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Contrast ratio of Dell S2722DC

Contrast ratio 309:1 (edge: 340:1)
Monitor model Dell S2722DC
Submitted 13 Apr 2025 03:10 CEST, by 79.127.*.*
Camera model Panasonic DMC-GX7
Processing remarks


Black
Screen photo
[open image]
Luminance 0.51 cd/m2
Luminance spread 0.13 cd/m2 (2 standard deviations)
Exposure value –2.35 stops   (aim for –2 to –3)
Exposure spread 0.38 stops
Area used for calculation 0.347 x 0.347
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 158 cd/m2
Luminance spread 11 cd/m2 (2 standard deviations)
Exposure value –2.72 stops   (aim for –2 to –3)
Exposure spread 0.1 stops
Area used for calculation 0.347 x 0.347
Camera settings Exposure time: 1/400   ISO: 400   F-number: 3.5
Focal length: 24 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.47 cd/m2
Luminance spread 0.15 cd/m2 (2 standard deviations)
Exposure value –2.49 stops   (aim for –2 to –3)
Exposure spread 0.47 stops
Area used for calculation 0.347 x 0.347
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
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.