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

Contrast ratio results

Contrast ratio 544:1
Monitor model
Submitted 08 Nov 2008 08:30 CET, by 64.41.*.*
Camera model Olympus E-500
Processing remarks

Warning: using the flash makes no sense.
Warning: image file 1: automatic white balance can cause inaccuracies.
image file 1: Note: image seems to be noisy. Try reducing the ISO setting or increasing the exposure time.
Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 49.5 s (Set EV to +4.6)
Warning: using the flash makes no sense.
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 2: Underexposed. Please increase the shutter time.
Note: image file 2: suggested exposure time: 1/11 s (Set EV to +3.5)

Black
Screen photo
[open image]
Luminance 0.01 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –7.13 stops   (aim for –2 to –3)
Exposure spread 1.46 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 2   ISO: 400   F-number: 3.5
Focal length: 28 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 5 cd/m2
Luminance spread 1 cd/m2 (2 standard deviations)
Exposure value –6.01 stops   (aim for –2 to –3)
Exposure spread 0.3 stops
Area used for calculation 0.404 x 0.404
Camera settings Exposure time: 1/125   ISO: 400   F-number: 3.5
Focal length: 28 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.