How do I go about doing this with digital cameras? I have a regular film camera (Pentax k1000), But I would really like to avoid the hassle of processing infrared film. I also would rather not send out my SLR camera and have it altered to an infrared camera because it is the only one I use. Is there any (gasp) photo editing software that can change your photos to infrared?
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Most digital cameras reach a little bit into the infrared spectrum, but not anywhere near to make for spectacular IR photography. To see if your camera works in this range, have someone point a TV remote at your camera while holding down a button. If your camera has any IR sensitiviy, you will see a bright dot in the picture.
Now comes the expensive part: for about $150, you can get an IR filter–necessary because normal light overwhelms IR light. After finding a way to attach it to your P&S camera, you should be able to take IR time-lapse photos.
The results are really disappointing, because the camera has a very limited bandwidth in this range… sort of like taking pictures with a camera where only the red pixels are working.
Infrared is light outside of the visible spectrum. The sensors in digital cameras are made for visible light. You cannot use a filter or software to give you something that is not there. Infrared film is sensitive to IR light.