13-122 50 mm Dia. Hoya ND-0.3 Absorptive Neutral Density Filter; OD 1.3 425-675nm

The 13-122 is a 50 mm diameter Neutral Density Filter, manufactured by Hoya and sourced from Edmund Optics. This filter is designed to reduce the intensity of light entering the optical system without altering its color composition. The absorptive nature of this filter ensures minimal reflection and scattering, making it ideal for various applications.

The filter boasts a 0.3 Neutral Density (ND), equivalent to an Optical Density (OD) of 1.3. This means it reduces the light intensity by a factor of 2, making it suitable for use in bright environments or when using high-power light sources. The ND-0.3 filter is designed to operate within the wavelength range of 425-675nm, covering a significant portion of the visible light spectrum.

The filter is constructed with a Thin Lens shape, ensuring minimal distortion and a compact design. It has a thickness of 1.45mm, contributing to its overall lightweight nature. The front and back surfaces of the filter are coated with EDM 13-088, a coating that enhances the filter's performance and durability.

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