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Contrast ratio results for lg lg3250

Contrast ratio 15:1
Monitor model lg lg3250
Submitted 26 Dec 2009 02:38 CET, by 201.210.*.*
Camera model Samsung Techwin VLUU L200 / Samsung L20
Processing remarks

Warning: image file 2: Overexposed. Please decrease the shutter time.
Note: image file 2: suggested exposure time: 1/23 s (Set EV to -2.5)

Black
Screen photo
[open image]
Luminance 0.44 cd/m2
Luminance spread 0.11 cd/m2 (2 standard deviations)
Exposure value –1.93 stops   (aim for –2 to –3)
Exposure spread 0.35 stops
Area used for calculation 0.491 x 0.491
Camera settings Exposure time: 1   ISO: 400   F-number: 2.8
Focal length: 34 mm   (35 mm equivalent)
Exposure compensation: 0
White
Screen photo
[open image]
Luminance 7 cd/m2
Luminance spread 0 cd/m2 (2 standard deviations)
Exposure value –0 stops   (aim for –2 to –3)
Exposure spread 0 stops
Area used for calculation 0.491 x 0.491
Camera settings Exposure time: 1/4   ISO: 400   F-number: 2.8
Focal length: 34 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.