Hoya L37 UV Sharp Cut Filter – Blue Light & Haze Reduction Lens Protection Model:R60 The 81A color correction filter

The 81A color correction filter warms the ambient light entering the lens by 200° Kelvin by adding "orange" to the overall exposure

These two filters are also available as a set

Photographer: Andrew Leggett

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The Hoya Diffuser filter gives a soft-focus effect due to the uneven surface pattern of the glass that spreads light rays traveling through your lens

Hoya L37 UV Sharp Cut Filter – Blue Light & Haze Reduction Lens Protection Model:R60 The 81A color correction filterProfessional Sharp Cut Filters for Cameras & Optics > Camera & Optic Accessories > Camera Lens Accessories > Camera Lens Filters Applications HOYA CANDEO sharp cut filters are long pass optical glass filters designed to block shorter wavelengths of light and allow longer wavelengths to pass. Within the wavelength range of approximately 350 nm to 800 nm, these filters selectively remove unwanted short wavelength lightsuch as ultraviolet and bluehelping