The unique ablility of digital camera CCD or CMOS Imaging Sensors to
capture infrared light allows a photographer to take Infrared pictures
at normal shutter speeds. The camera's imaging sensor must be modified
for this to happen. There are no infrared filters used on the end of the
lens which allows the photographer to use the IR camera just like a
normal camera but with Infrared results. Also, digial camera allow use
of many different types of infrared filters which creates a large
variety of infrared results.