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Polarising Filters

A polarising filter, CPL or circular polariser as they are also known, are one of the most widely used lens filters in outdoor photography. They are used for several purposes such as to darken blue skies, manage reflections and to reduce glare from wet surfaces including rivers and lakes. Polarisers are screwed on to the threaded front of a lens and rotated to adjust the light filtering effect. As with all screw-in filters you must select the correct size diameter for your particular lens. This diameter measured in millimetres can usually be found near the front element.

Find the ideal solution in our comprehensive range, which provides photographers of any skill level with the right CPL for their optics.

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A polarising filter will work with most camera systems and are not brand specific in any way. They range in price and quality from inexpensive entry level to professional-grade options. The defining factors include the amount of light which will enter the lens, which is referred to as light transmission, to the coatings on the filter which keep it clean and grease-free. The more light which enters the lens the better on the whole, as the shutter speed will be less affected. Polarisers will generally decrease light transmission by an EV stop down to two or three stops.

Rotating the filter whilst viewing the image through the LCD or viewfinder will demonstrate the effect in action. If used at the correct angle, blues skies will become bluer, reflections from wet leaves or rocks will disappear and the surface of water will become completely translucent rather than showing all manor of reflections. For these reasons landscape photographers in particular will always have at least one in their camera backpack.

It is always a good idea to keep your filters clean with a cleaning accessory and this stands true with CPL’s. A filter which has water spots, dust or other grime will sometimes degrade the final image, and can show as minor softening or blur in the photograph.

Cambridge in Colour is an excellent resource for the science behind photography and have a brilliant article on polarising filters which you can read here.

Polarisers are perfect for any type of lens and camera combination including DSLR, mirrorless and medium format cameras. Our inventory covers leading companies such as B+W, Hoya and Sigma as well as camera manufacturer own options from Canon, Leica, Nikon and Panasonic Lumix.

Why not browse our extensive selection of all types of lens filters from leading brands including Hoya, LEE, Tiffen and Cokin.

Order securely online or drop into either our Burgess Hill or London stores to chat with one of our expert team with any questions. Please also call us on 01444 237070 or email at and we will get back to you regarding any query.

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Events at Park Cameras

Throughout the year, Park Cameras hold and attend a range of events. For photographers currently stuck indoors, as opposed to our events that are traditionally held in store or on the road, we are currently working on a range of events that can be held in the comfort and safety of your own home. In these uncertain times, there’s never been a better time to get to grips with your camera, and hopefully we can help achieve this. Find out more