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Contrast ratio of ASUS VN248QP

Contrast ratio 661:1 (edge: 560:1)
Monitor model ASUS VN248QP
Submitted 21 Mar 2020 23:55 CET, by 47.215.*.*
Camera model Canon PowerShot G9 X
Processing remarks


Black
Screen photo
[open image]
Luminance 0.35 cd/m2
Luminance spread 0.27 cd/m2 (2 standard deviations)
Exposure value –2.27 stops   (aim for –2 to –3)
Exposure spread 1.16 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 0.5   ISO: 400   F-number: 2
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 234 cd/m2
Luminance spread 28 cd/m2 (2 standard deviations)
Exposure value –0.87 stops   (aim for –2 to –3)
Exposure spread 0.18 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 1/501   ISO: 400   F-number: 2
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.42 cd/m2
Luminance spread 0.12 cd/m2 (2 standard deviations)
Exposure value –2.03 stops   (aim for –2 to –3)
Exposure spread 0.41 stops
Area used for calculation 0.389 x 0.437
Camera settings Exposure time: 0.5   ISO: 400   F-number: 2
Focal length: 28 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.