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Contrast ratio results for Samsung SyncMaster 2494HS

Contrast ratio 220:1
Monitor model Samsung SyncMaster 2494HS
Submitted 07 Feb 2010 12:38 CET, by 86.17.*.*
Camera model Canon EOS 400D DIGITAL
Processing remarks

Warning: image file 1: camera was zoomed in too much.
Warning: image file 2: camera was zoomed in too much.
Warning: image file 2: exposure time below 1/500 sec is unreliable. Try increasing the EV compensation.

Black
Screen photo
[open image]
Luminance 0.67 cd/m2
Luminance spread 0.61 cd/m2 (2 standard deviations)
Exposure value –3.04 stops   (aim for –2 to –3)
Exposure spread 1.42 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/8   ISO: 400   F-number: 1.8
Focal length: 210 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 148 cd/m2
Luminance spread 58 cd/m2 (2 standard deviations)
Exposure value –3.22 stops   (aim for –2 to –3)
Exposure spread 0.57 stops
Area used for calculation 1 x 1
Camera settings Exposure time: 1/2000   ISO: 400   F-number: 1.8
Focal length: 210 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.