February 13, 2008
Infrared Photography is based on capturing light in the 700-900nm section of the light spectrum. We normally perceive it as heat, but with certain filters it is possible to capture this in a photo. However most digital cameras have IR filters to prevent oversaturation in the red channel. Canon Digital SLRs have quite a strong filter, but you can still capture photos by using long exposures. Other cameras have weaker filters and are more suited to Infrared. In fact, there is a whole industry based around removing the IR filter from a camera, specifically for IR photograpy. Like I said you can still shot with longer exposures to compensate for the filter.