![Heliopan 37mm Slim Circular Polarizer Filter from www.thelafirm.com](http://thelafirm.com/cdn/shop/products/so0cpddl6dpjcd9nflwx__80493.1676014139_{width}x.jpg?v=1709429789)
The Heliopan 37mm Slim Circular Polarizer Filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. This results in a noticeable increase in the saturation of skies and foliage, as well as clearer imagery when photographing in hazy conditions. A circular polarizer differs from a linear polarizer in that it supports full use of a camera's autofocus and auto exposure functions.