Midwest Optical Systems LP285-72 Longpass Filter 6mm HD CS Mount Lens

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Midwest Optical Systems LP285-72 Longpass Filter 6mm HD CS Mount LensMidwest Optical Systems LP285 72 High Transmission Heat Resistant A R Protective Window M72 Protective Filters Often referred to as a sharp cut filter, Longpass Filters are specifically designed to pass a broad spectrum of longer wavelength light while blocking shorter wavelengths. Longpass Filters are often used in fluorescence applications to block an excitation light source or to pass multiple emission wavelengths, improving signal to noise ratio.