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B W 40.5mm 093 Black Infrared SH Filter



This B W Infrared Filter blocks the entire visible spectrum, so to our eyes it looks completely opaq
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B W 40.5mm 093 Black Infrared SH Filter
This B W Infrared Filter blocks the entire visible spectrum, so to our eyes it looks completely opaque. Iit makes pure infrared photographs possible without the visible red component. Its transmission only begins to exceed 1 at 800 nm, rising to 88 at 900 nm, and remains that high far beyond the upper limit of sensitisation covered by infrared films. This filter is used less frequently in pictorial photography because of the dramatic loss of effective ISO. But in the scientific field, material

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