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

Contrast ratio results for AOC 2230Fa

Contrast ratio 401:1 (edge: 609:1)
Monitor model AOC 2230Fa
Submitted 01 Feb 2009 08:39 CET, by 67.170.*.*
Camera model SAMSUNG TECHWIN CO. LTD. Samsung S85
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 2: automatic white balance can cause inaccuracies.
image file 2: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 3: automatic white balance can cause inaccuracies.
image file 3: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.

Black
Screen photo
[open image]
Luminance 0.27 cd/m2
Luminance spread 0.06 cd/m2 (2 standard deviations)
Exposure value –2.74 stops   (aim for –2 to –3)
Exposure spread 0.33 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 1   ISO: 400   F-number: 2.9
Focal length: 38 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 108 cd/m2
Luminance spread 22 cd/m2 (2 standard deviations)
Exposure value –3.06 stops   (aim for –2 to –3)
Exposure spread 0.3 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 1/500   ISO: 400   F-number: 2.9
Focal length: 38 mm   (35 mm equivalent)
Exposure compensation: 0
Black at screen edge
Screen photo
[open image]
Luminance 0.18 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –3.34 stops   (aim for –2 to –3)
Exposure spread 0.43 stops
Area used for calculation 0.549 x 0.549
Camera settings Exposure time: 1   ISO: 400   F-number: 2.9
Focal length: 38 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.