NK Guy wrote:
The thing is that infrared energy tends to record as red light when detected by digital camera CCDs. So manufacturers build IR-blocking filters ("hot mirrors") into their digital camera bodies to avoid red fringing. These filters are usually, except in the case of some high-end cameras, fixed in place and are not removable. Since the percentage of people who want to take IR photos is pretty small I guess makers feel that they can sell more cameras by blocking this ability.
Hmm. That's right. But does it HAVE to be not removable? I could imagine a camera that would provide something like "IR-filter on demand". They do that already with a neutral density filter in my Canon G3. So I don't see much technical difficulties to do the same with the IR filter. Then again, you may be right. Probably the demand is just not high enough. OTOH, how many people really USE an intervalometer, multiple exposures and the like? If it's doable cheap, they might consider doing it in some pro bodies at least.
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