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Near-IR Photography

I am interested in taking near-ir photographs with a digita camera, and I have been able to do so in a rudimentary fashion with my current camera (Minolta Dimage Z10) but I have to turn the shutter speed way down, making it hard to keep the camera still. My understanding is that there is a filter inside the camera that filters out most of the ir light, thus requiring the long shutter speed. Does anyone have experience removing this filter from a camera (I really dont want to tear into the lens section of my Z10 because the zoom lens makes it rather complex) and the effect that this modification has? Thanks

John Bird
Wed, 26 Jul 2006 15:23:31 -0700

John, most of the IR-blocking filters are are a piece of glass that sit between the lens and the imaging sensor. They are rarely integrated into the lens elements. They are generally easy to remove if you have the skills to take your camera apart. The hardest part is to make a plan glass replacement. But once you've done it, it will greatly improve your shutter speed.

I have done it with my Sony Cyber-shot before and it's fairly easy. I've documented that process in my "Hacking Digital Cameras" book. I've also included an appendix on how to cut a glass replacement.

You might also search around the web. Many people has done it with other digital cameras.

Chieh Cheng
Thu, 27 Jul 2006 15:18:40 -0700

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