Adjustable 550nm to 750nm Infrared Filter 49mm 52mm 55mm 58mm 62mm 67mm 72mm 77m 82mm IR Filter for Canon Nikon Sony Fuji Olympus Pentax Camera Lens SLR DSLR
Brandnan
Description
Infrared filters, sometimes called IR filters or heat-absorbing filters, are designed to allow IR mid-infrared wavelengths while block visible light. They are often used in devices with bright incandescent light bulbs (such as slide and overhead projectors) to prevent unwanted heating There are also filters which are used in solid state (CCD or CMOS) video cameras to allow IR due to the high sensitivity of many camera sensors to near-infrared light. These filters typically have a blue hue to them as they also sometimes block some of the light from the shorter visible light and UV wavelengths..syi