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

Contrast ratio of Acer

Contrast ratio 381:1
Monitor model Acer
Submitted 01 Aug 2010 21:07 CEST, by 83.87.*.*
Camera model Nikon D60
Processing remarks


Black
Screen photo
[open image]
Luminance 0.1 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –2.97 stops   (aim for –2 to –3)
Exposure spread 0.91 stops
Area used for calculation 0.876 x 0.981
Camera settings Exposure time: 6   ISO: 400   F-number: 4.8
Focal length: 63 mm   (35 mm equivalent)
Exposure compensation: 1
White
Screen photo
[open image]
Luminance 40 cd/m2
Luminance spread 33 cd/m2 (2 standard deviations)
Exposure value –2.89 stops   (aim for –2 to –3)
Exposure spread 1.29 stops
Area used for calculation 0.876 x 0.981
Camera settings Exposure time: 1/60   ISO: 400   F-number: 4.8
Focal length: 63 mm   (35 mm equivalent)
Exposure compensation: 1

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.