Lens Filter

A polarizing filter reduces reflections from non-metallic surfaces such as windows and water. In doing so it also increases contrast and makes colours saturated to give more impact and depth to photographs.

It will make blue skies look really deep to add drama to your land and seascapes.  Best results are with the sun at 90 degrees to you.

Slip the polarising filter over the lens and rotate it while you look through the viewfinder. If you use one on a camera without a direct viewer hold the filter in front of your eye, adjust and then with it in the same position fit over the lens.

It works best at about 40 degrees angle from the reflective surface.

Polarising filters have a filter factor of about 3-4 which is 1.5 to 2 stops exposure increase.

Use two polarising filters together and you can create a variable neutral density filter.

Use a polariser with a red filter and you have a powerful filter for infrared.

A linear polariser is best used with older manual cameras and a circular polariser with modern AF cameras.

It’s one of the few filters that cannot be replicated digitally.

Links to buy

Hoyarex 611 Linear Polariser
Hoyarex 621Circular Polariser
Cokin A160 Linear Polariser
Cokin P Linear Polariser
Hoya 49mm Circular Polariser
Jessops 62mm Circular Polariser

Check this page Filters For Sale regularly for updates and other filters