The B+W 67mm Circular Polarizer MRC Filter helps to 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. The addition of this quarter wave plane is to circularly polarize the linearly polarized light for the use of auto focus and exposure functions. 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.

Important Notice: This is being sold by an offshore business + may incur duty or tax. Find out more at http://www.whatsmyduty.org.nz (If the value of the goods add freight under $400, no import duty or tax will be charged) {Shipping} We do not allow pick-ups for any items. All items are shipped from our overseas warehouse by registered mail, normal the estimate delivery is 3-8 business days. {Warranty} 1 year warranty against manufacturing defects. Our warranty is not covered Physical Damage (Include wear and tear, dampness, dust, shock, fall, sand, corrosion, water damaged and fire damaged). {Payment Options} We accept payment by NZ bank deposit, NZ internet banking transfer and PayNow. We have domestic new zealand bank account. Buyers no need to send money overseas.