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Infrared cache - GC3904G


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certainly not all digital cameras will see any infrared light. The cause is that there is normally a filter in front of the CCD. Of 4 different digital cameras tested non of these could se anything more than the 5 W IR-lamp when the lamp was held in front of the camera and pointing directly into the lens.

My iPhone4 has obviously a less efficient filter and makes it possible to see the "invisible" scribble.


Cheers! And I whish a good aching year // Ingvar / Boraas city / Sweden

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