IR filters are constructed of optical precision ground and polished glass. Used 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. This 72mm 950nm Infrared IR Digital Camera Lens Glass Filter is the best protector for your digital camera and camcorder lens. Don't hesitate， just have a try， your will never regret!                                    Features            IR filters are constructed of optical precision ground and polished glass<br>Used for photography with infrared films<br>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<br>Can bring you a magic X-ray effective when you use it on a camera with infrared night shot function<br>This is an original product<br>Diameter: 72mm<br>                                                                                                Package Includes            1 x 72mm Infra-Red IR Filter 950nm<br>                                                            Extra Info            950nm is suitable for outdoor and strong light use<br>850nm is suitable for indoor and weak light use<br>760nm is suitable when at dawn or under faint light<br>720nm is mixed-ray filter， also known as second-line photography interference. Part of the infrared and visible light can mixed together to create the effect of alternative and magic<br>