Runshuangyu 77MM Optical Glass Circular Infrared X-Ray Adjustable IR Pass Filter, Variable from 530nm to 750nm 590nm 680nm 720nm for DSLR Camera Photography
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Description
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Infrared filters, sometimes called IR filters or heat-absorbing filters, are designed to allow IR mid-infrared wavelengths while blocking visible light. Infrared filters are often used in devices with bright incandescent light bulbs (such as slide and overhead projectors) to prevent unwanted heating. IR filters are widely 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. X-Ray 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. Digital cameras are usually equipped with IR-blocking filters to prevent unnatural-looking images.
Description
(1)
Infrared filters, sometimes called IR filters or heat-absorbing filters, are designed to allow IR mid-infrared wavelengths while blocking visible light. Infrared filters are often used in devices with bright incandescent light bulbs (such as slide and overhead projectors) to prevent unwanted heating. IR filters are widely 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. X-Ray 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. Digital cameras are usually equipped with IR-blocking filters to prevent unnatural-looking images.
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