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Contrast ratio of ASUS VG27AQ

Contrast ratio 1070:1 (edge: 1531:1)
Monitor model ASUS VG27AQ
Submitted 13 May 2025 02:18 CEST, by 99.230.*.*
Camera model Sony ILCE-6400
Processing remarks


Black
Screen photo
[open image]
Luminance 0.24 cd/m2
Luminance spread 0.22 cd/m2 (2 standard deviations)
Exposure value –2.81 stops   (aim for –2 to –3)
Exposure spread 1.42 stops
Area used for calculation 0.347 x 0.391
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 25 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 256 cd/m2
Luminance spread 24 cd/m2 (2 standard deviations)
Exposure value –1.71 stops   (aim for –2 to –3)
Exposure spread 0.13 stops
Area used for calculation 0.347 x 0.391
Camera settings Exposure time: 1/500   ISO: 400   F-number: 2.8
Focal length: 25 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.17 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –3.32 stops   (aim for –2 to –3)
Exposure spread 1.01 stops
Area used for calculation 0.347 x 0.391
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 25 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.