Contrast ratio | Test results | LCD test | Small-screen tests | Lagom home

Contrast ratio of hp 22f

Contrast ratio 664:1 (edge: 444:1)
Monitor model hp 22f
Submitted 03 Jan 2022 18:53 CET, by 43.251.*.*
Camera model Nikon D5600
Processing remarks


Black
Screen photo
[open image]
Luminance 0.34 cd/m2
Luminance spread 0.18 cd/m2 (2 standard deviations)
Exposure value –3.16 stops   (aim for –2 to –3)
Exposure spread 0.76 stops
Area used for calculation 0.459 x 0.515
Camera settings Exposure time: 1   ISO: 400   F-number: 3.8
Focal length: 33 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 229 cd/m2
Luminance spread 43 cd/m2 (2 standard deviations)
Exposure value –2.43 stops   (aim for –2 to –3)
Exposure spread 0.27 stops
Area used for calculation 0.459 x 0.515
Camera settings Exposure time: 1/400   ISO: 400   F-number: 3.8
Focal length: 33 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.52 cd/m2
Luminance spread 0.16 cd/m2 (2 standard deviations)
Exposure value –2.58 stops   (aim for –2 to –3)
Exposure spread 0.44 stops
Area used for calculation 0.459 x 0.515
Camera settings Exposure time: 1   ISO: 400   F-number: 3.8
Focal length: 33 mm   (35 mm equivalent)
Exposure compensation: 0
{adcode}

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.