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Contrast ratio results for Samsung SyncMaster BX2250

Contrast ratio 1754:1
Monitor model Samsung SyncMaster BX2250
Submitted 17 Jan 2012 21:40 CET, by 76.10.*.*
Camera model Canon PowerShot SD1400 IS
Processing remarks

Warning: image file 1: Underexposed. Please increase the shutter time.
Note: image file 1: suggested exposure time: 10.0 s (Set EV to +5.3)

Black
Screen photo
[open image]
Luminance 0.03 cd/m2
Luminance spread 0.01 cd/m2 (2 standard deviations)
Exposure value –5.82 stops   (aim for –2 to –3)
Exposure spread 0.59 stops
Area used for calculation 0.396 x 0.396
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 27.4 mm   (35 mm equivalent)
Exposure compensation: 2
White
Screen photo
[open image]
Luminance 52 cd/m2
Luminance spread 7 cd/m2 (2 standard deviations)
Exposure value –3.35 stops   (aim for –2 to –3)
Exposure spread 0.19 stops
Area used for calculation 0.396 x 0.396
Camera settings Exposure time: 1/318   ISO: 400   F-number: 2.8
Focal length: 27.4 mm   (35 mm equivalent)
Exposure compensation: -1

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.