Infrared photography is done much like long exposure photography when used on a typical unmodified digital camera. As a result there are two hurdles to deal with; the extreme reduction in light most the camera receives, and the shift in focusing. A tripod is very helpful in dealing with the loss of light, the latter however requires some practice. I’ve enjoyed shooting infrared both on an unmodified camera (the limitation allows for long exposure effects) as well as a converted camera where the filter is removed and replaced with one that allows infrared light to pass.
I enjoy this type of photography, I have to consider the effect of long exposure (on an unmodified camera) as well as consider the way infrared light works; which behaves differently than visual light especially depending on the scene.