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Contrast ratio of Hp EliteDisplay E221i

Contrast ratio 783:1 (edge: 805:1)
Monitor model Hp EliteDisplay E221i
Submitted 23 Mar 2018 02:02 CET, by 50.81.*.*
Camera model Nikon D5100
Processing remarks


Black
Screen photo
[open image]
Luminance 0.45 cd/m2
Luminance spread 0.04 cd/m2 (2 standard deviations)
Exposure value –1.91 stops   (aim for –2 to –3)
Exposure spread 0.12 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 350 cd/m2
Luminance spread 22 cd/m2 (2 standard deviations)
Exposure value –1.26 stops   (aim for –2 to –3)
Exposure spread 0.09 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/500   ISO: 400   F-number: 2.8
Focal length: 75 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.43 cd/m2
Luminance spread 0.14 cd/m2 (2 standard deviations)
Exposure value –1.95 stops   (aim for –2 to –3)
Exposure spread 0.45 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 75 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.