Hoya Circular Polariser Pro 1D DMC Filter 77mm

Light rays that are reflected become polarized. Polarizing filters are used to select which light rays enter your camera lens. They remove unwanted reflections from non-metallic surfaces such as water or glass etc. They also enable colors to become more saturated and appear clearer, with better contrast. This effect is often used to increase the contrast and saturation in blue skies and white clouds and can be seen through the viewfinder. HOYA's polarizing filters do not affect the overall color balance of a shot.

 The Value in a Hoya Multi-coated filter

The wide aperture lenses of today are very expensive and all photographers want to get the most speed, optical performance, and dollar performance from their investment.

Say a customer pays $2000 for a 28-70mm f/2.8 lens. Then, to protect this investment the customer buys a cheap bare glass filter, which has a light reflection rate of 9%. This filter is literally slowing the lens down by 9%, or effectively turning a $500 f/2.8 lens into the equivalent of a slower f/3.0 lens. The value of the lens drops 9% when you put the cheap filter on it. The cost savings of the less expensive filter do not off set the loss of lens speed.

Also, this does not address the loss of sharpness or focus shift, which can have a noticeable detrimental impact on picture quality. For these reasons, Hoya multi-coated filters present the best value on the market today.

 Circular Polarizers are specifically designed for use with auto-focus SLR cameras (They will also work on manual systems and video cameras without problems). This filter is threaded front and back. You can screw another filter to it or another accessory like a lens hood.

There are few more important things that a nature photographer can do to improve his or her photography than becoming familiar with the use of the polarizing filter.
 
What can a polarizing filter do for you? Among other things it can darken the sky, remove reflections from water, and make foliage appear less shiny. Colour saturation is also significantly enhanced. It is the only filter for use with colour film that can do all of this.

A polarizing filter is the most productive accessory that a photographer can have in his kit, second only to a decent tripod and head. Don't leave home without one. 
 
Key Features

Circular Polariser Pro 1D DMC Filter Details:

• Removes unwanted reflections from non-metallic surfaces such as glass, water, wood, grass, leaves, snow, etc.

• Eliminates ultraviolet rays to remove haze from outdoor shots as well as polarizing the light to remove reflections, and increase color saturation, without affecting the overall color balance

• Increases color saturation and contrast in blue skies and white clouds for incredibly vivid yet natural looking scenic photographs

• Rotating front element allows full creative control over degree of polarization

• Made of highest quality optical glass 

• Creates dramatic sky/cloud contrast.

• Saturates colors without changing color balance.

• Mount rotates to control amount of effect.

• Super Multi Coated for maximum flare protection.

• Filter allows you to decide which types of reflected light enter your camera lens

• Polarizer saturates colors and increases contrast

• Circular polarizer designed for today's newer split-beam metering systems uses in auto-focus cameras