Schneider Combination ND & Circular Polarizer Filter (6.6 x 6.6", 3-Stop)

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This 6.6 x 6.6" Schneider Combination ND & Circular Polarizer Filter is a filter that combines a solid neutral density effect and a circular polarizer effect within a single glass surface. The solid neutral density effect provides an exposure reduction of 3 stops. Its 0.9 optical density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than would normally be required. By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily.

Along with this filter's solid neutral density effect is a circular polarizer effect that is simultaneously applied to help reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizing filter arranges and filters this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.

A circular polarizer only differs from a linear polarizer in that it contains a quarter wave plane in addition to the linear polarizing filter. Due to how the light is broken down and filtered with a linear polarizer, auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarized, it permits the use of these functions.

This filter is constructed from water white glass for increased optical clarity as well as color fidelity. It is compatible with filter holders that can accommodate 4mm-thick, 6.6 x 6.6" rectangular filters.

0.9 neutral density filter effect darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required and is combined with a circular polarizing effect to help reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface

8x filter factor provides a reduction of 3 stops; neutral density filter effect allows you to control depth of field and convey movement more easily

Polarizing filter effect arranges, and filters, directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of the light

Clears up haze in distant landscapes and provides more saturated, vivid colors

Strongest polarizing effect when used at a 90° angle from the sun

Circular polarizers are ideal for use with digital cameras and autofocus lenses where a linear polarizer will often disrupt auto exposure and focus features

Constructed from water white glass for increased optical clarity

Non-coated

Padded pouch included for storage and transport