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

Contrast ratio results for Acer

Contrast ratio 0:1
Monitor model Acer
Submitted 11 Sep 2010 01:48 CEST, by 99.74.*.*
Camera model
Processing remarks

Warning: image file 1: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Error: image file 1: could not find ISO setting.
Error: could not determine exposure time.
Error: image file 1: could not find aperture/F-number setting.
Warning: image file 2: could not determine angle of view; assuming 38 mm lens (35 mm equivalent).
Error: image file 2: could not find ISO setting.
Error: could not determine exposure time.
Error: image file 2: could not find aperture/F-number setting.

Black
Screen photo
[open image]
Luminance cd/m2
Luminance spread cd/m2 (2 standard deviations)
Exposure value – stops   (aim for –2 to –3)
Exposure spread stops
Area used for calculation x
Camera settings Exposure time:   ISO:   F-number:
Focal length: mm   (35 mm equivalent)
Exposure compensation:
White
Screen photo
[open image]
Luminance cd/m2
Luminance spread cd/m2 (2 standard deviations)
Exposure value – stops   (aim for –2 to –3)
Exposure spread stops
Area used for calculation x
Camera settings Exposure time:   ISO:   F-number:
Focal length: mm   (35 mm equivalent)
Exposure compensation:

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.