A&R dHD 52mm - IR850 Infrared Filter - for ANY DSLR Camera, SLR Camera, Or Lens with a 52MM Filter Thread * dHD 52mm Infrared Filter, Digital High Definition. * Low Profile Filter Ring, High Index Optical Glass, Maximum Light Transmission * Reliable Service, Same Day Shipping * Use for photography with infrared films. Infrared film is also sensitive to ultraviolet rays and the shorter wavelengths of the visible spectrum so it is necessary to filter out all but the infrared rays. IR850 passes only infrared rays above 850nm. Infrared filter often used in crime detection, medical photography, detection of distribution of vegetation, etc. For photographer, this filter can be used with infrared film or digital photography to get interesting artistic and sometimes creative photos.