B+W 58mm Black (093) Infrared Filter
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The B+W 58mm Black (093) 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 ... More