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

Contrast ratio results

Contrast ratio 2703:1
Monitor model
Submitted 01 May 2010 14:09 CEST, by 80.85.*.*
Camera model Fujifilm FinePix F20
Processing remarks

Warning: image file 1: automatic white balance can cause inaccuracies.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 18.5 s (Set EV to +6.2)
Warning: image file 2: automatic white balance can cause inaccuracies.

Black
Screen photo
[open image]
Luminance 0.03 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –8.71 stops   (aim for –2 to –3)
Exposure spread 0.49 stops
Area used for calculation 0.52 x 0.52
Camera settings Exposure time: 1/4   ISO: 200   F-number: 2.8
Focal length: 36 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 86 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –1.62 stops   (aim for –2 to –3)
Exposure spread 0.12 stops
Area used for calculation 0.52 x 0.52
Camera settings Exposure time: 1/79   ISO: 200   F-number: 2.8
Focal length: 36 mm   (35 mm equivalent)
Exposure compensation: 0
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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.