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Old 01/09/2008, 07:57 PM
KurtsReef KurtsReef is offline
Wish coral grew faster
 
Join Date: May 2007
Location: North Boston, NY
Posts: 1,311
most DSLR sensors are very sensitive to IR light so they come with an IR filter installed inside the camera. The process of converting it is to replace that with an IR pass filter which as described blocks visible light. Since the sensors are sensitive to IR light you can take more normal daytime exposures instead of IR film which are generally long exposures...both allow for some very cool images.