Contrast ratio of HP Z Display

Contrast ratio 423:1
Monitor model HP Z Display
Submitted 01 Jan 2019 02:10 CET, by 84.1.*.*
Camera model Pentax K-5 II s
Processing remarks


Black
Screen photo
Luminance 0.36 cd/m2
Luminance spread 0.23 cd/m2 (2 standard deviations)
Exposure value –2.55 stops   (aim for –2 to –3)
Exposure spread 0.92 stops
Area used for calculation 0.764 x 0.859
Camera settings Exposure time: 2.5   ISO: 400   F-number: 5
Focal length: 55 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
Luminance 154 cd/m2
Luminance spread 41 cd/m2 (2 standard deviations)
Exposure value –3.47 stops   (aim for –2 to –3)
Exposure spread 0.38 stops
Area used for calculation 0.764 x 0.859
Camera settings Exposure time: 1/320   ISO: 400   F-number: 5
Focal length: 55 mm   (35 mm equivalent)
Exposure compensation: 0
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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.