Citiwide Infrared IR720720nm Filter  This IR-blocking filter mustnot be confused with heat-resisting protection filters for projectorsor spotlights.  Instead, it is intended for use as protectionfor IR-sensitive CCD sensors or in the light path of illuminationdevices with low thermal characteristics. IR filter can blockall visible light under 720 nm. It gradually begins to absorb infraredradiation; long wave red light is slightly weakened, so that thisfilter has a subtle green tint.  But in CCD applications, thiscan be readily corrected electronically. CitiwideInfrared IR850 850nm Filter
 Infraredfilters block all visible light letting only infrared light pass. Thesefilters are for use on cameras that are infrared sensitive. Filters areconstructed of optical precision ground and polished glass. They appearcompletely black to the human eye.
  Withthe filter in place 99% of the light seen by the naked eye is blockedout and only infrared light is filtered through. Technically the nakedeye cannot see 100% black but with the infrared filter and yourcamcorder specialist functions, you will magically be able to.Filtersare great for viewing under complete darkness if you have an infraredilluminator. Blocking visible light enables you to achieve correctfocus since infrared light and visible light have different focusingcharacteristics. Citiwide InfraredIR950 950nm Filter Infrared filters block all visiblelight letting only infrared light pass. These filters are for use oncameras that are infrared sensitive. Filters are constructed of opticalprecision ground and polished glass. They appear completely black tothe human eye.If you hold the 950nm filter to a bright light, thefilter will appear completely opaque.
Filters are great for viewing under complete darkness if you have aninfrared illuminator. Blocking visible light enables you to achievecorrect focus since infrared light and visible light have differentfocusing characteristics.With the filter in place 99% of thelight seen by the naked eye is blocked out and only infrared light isfiltered through. Technically the naked eye cannot see 100% black butwith the infrared filter and your camcorder specialist functions, youwill magically be able to.