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

Contrast ratio results for Samsung SyncMaster T220 (up by Snake)

Contrast ratio 1182:1
Monitor model Samsung SyncMaster T220 (up by Snake)
Submitted 04 Aug 2008 19:22 CEST, by 195.28.*.*
Camera model Canon EOS 450D
Processing remarks

Warning: Image F-number settings are not the same.
Warning: Image focal lengths/zoom levels are not the same.

Black
Screen photo
[open image]
Luminance 0.26 cd/m2
Luminance spread 0.05 cd/m2 (2 standard deviations)
Exposure value –3.35 stops   (aim for –2 to –3)
Exposure spread 0.26 stops
Area used for calculation 0.375 x 0.423
Camera settings Exposure time: 1   ISO: 400   F-number: 3.5
Focal length: 27 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 305 cd/m2
Luminance spread 60 cd/m2 (2 standard deviations)
Exposure value –2.63 stops   (aim for –2 to –3)
Exposure spread 0.28 stops
Area used for calculation 0.541 x 0.61
Camera settings Exposure time: 1/500   ISO: 400   F-number: 4.2
Focal length: 39 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.