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

Contrast ratio of HP vs17e

Contrast ratio 436:1
Monitor model HP vs17e
Submitted 16 Oct 2009 03:12 CEST, by 220.255.*.*
Camera model Nikon COOLPIX S600
Processing remarks


Black
Screen photo
[open image]
Luminance 0.21 cd/m2
Luminance spread 0.03 cd/m2 (2 standard deviations)
Exposure value –2.92 stops   (aim for –2 to –3)
Exposure spread 0.2 stops
Area used for calculation 0.393 x 0.428
Camera settings Exposure time: 0.5   ISO: 800   F-number: 2.7
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 90 cd/m2
Luminance spread 5 cd/m2 (2 standard deviations)
Exposure value –1.8 stops   (aim for –2 to –3)
Exposure spread 0.08 stops
Area used for calculation 0.393 x 0.428
Camera settings Exposure time: 1/400   ISO: 800   F-number: 2.7
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.