From GREEN.L, China's Leading Camera Filter BrandWith first-class production equipment,the reliable quality and creative design.Focus on filter research and development and production for 25 yearsFeatureThe GREEN.L Infrared Filter is a specialized filter used for infrared photography with digital cameras and specialized infrared film.Excellent for outdoor and indoor filming, the filter is essential for capturing the highest pictures in overcast outdoor lighting. With the filter in place 99% of the light seen by the naked eye is blocked out and only infrared light is filtered through. Technically the naked eye cannot see 100% black but with the infrared filter and your camcorder specialist functions, you will magically be able to.Due to the nature of infrared photography, the filter factor for this filter is highly variable and depends largely on the ISO sensitivity in use and lighting conditions.Note:1.Please set a custom white balance of your camera.2.Please set the camera to manual mode, try a few more times, get the best exposure time.The exposure time is relatively long when using IR filters.720nm for indoor and weak light use.760nm for cloudy outdoor at nightfall and brightness indoor.850nm for indoor and weak cloudy outdoor light.950nm for outdoor and strong light,such as summer time.Package including30mm IR 720 filter × 1Lens Protective Case× 1