The Hoya Variable Density filter uses two polarizing layers to control the amount of light that passes through the filter and into the camera lens. At it's minimum effect the filter passes 1/3 of the light in a scene. That is equal to 1.5 stops on the aperture or shutter speed. At it maximum effect the filter passes just 1/400 of the light in a scene. That is equal to 9 stops on the aperture or shutter speed.

After the filter is mounted on the lens, turning the filter ring between Min and Max can greatly control the amount of light entering the lens. With the Variable Density filter it is possible to shoot with fast lenses like a 50mm f/1.4 lens wide open at f/1.4 in full sun for a very shallow depth of field. Or, to slow down the shutter speed to where the shutter can be open for several seconds in full sunlight. This is enough to create artistic blurring shots of motion on water, cars, people or almost anything that moves. The creative possibilities are endless. For best results use a tripod when photographing with slow shutter speeds.

Key features:
* Filter Factor NDx3-NDx400. Approx 1.5 to 9 stops light reduction.
* Black Almite Frame. Satin finish reduce reflections.
* Low Profile Frame. Avoids vignetting on super wide-angle lenses, will accept a clip-cap.
* Rotating Inner Ring. With scale indicating max. through to min. settings.

The Hoya Variable Density filter uses two polarizing layers to control the amount of light that passes through the filter and into the camera lens. At it's minimum effect the filter passes 1/3 of the light in a scene. That is equal to 1.5 stops on the aperture or shutter speed. At it maximum effect the filter passes just 1/400 of the light in a scene. That is equal to 9 stops on the aperture or shutter speed.

After the filter is mounted on the lens, turning the filter ring between Min and Max can greatly control the amount of light entering the lens. With the Variable Density filter it is possible to shoot with fast lenses like a 50mm f/1.4 lens wide open at f/1.4 in full sun for a very shallow depth of field. Or, to slow down the shutter speed to where the shutter can be open for several seconds in full sunlight. This is enough to create artistic blurring shots of motion on water, cars, people or almost anything that moves. The creative possibilities are endless. For best results use a tripod when photographing with slow shutter speeds.

Key features:
* Filter Factor NDx3-NDx400. Approx 1.5 to 9 stops light reduction.
* Black Almite Frame. Satin finish reduce reflections.
* Low Profile Frame. Avoids vignetting on super wide-angle lenses, will accept a clip-cap.
* Rotating Inner Ring. With scale indicating max. through to min. settings.

Hoya's Pro1D Circular Polarising filter offers colour and contrast enhancement. It allows you to select which light rays enter your camera lens and removes unwanted reflections and glare from non-metallic surfaces such as water, glass etc. A camera angle of 30 degrees from the reflecting surface is ideal for maximum effect. It also enables colours to become more saturated and appear clearer with better contrast - without affecting the overall colour balance of a shot. It is often used to increase the contrast and saturation in shots of blue skies and white clouds.

The Hoya Variable Density filter uses two polarizing layers to control the amount of light that passes through the filter and into the camera lens. At it's minimum effect the filter passes 1/3 of the light in a scene. That is equal to 1.5 stops on the aperture or shutter speed. At it maximum effect the filter passes just 1/400 of the light in a scene. That is equal to 9 stops on the aperture or shutter speed.

After the filter is mounted on the lens, turning the filter ring between Min and Max can greatly control the amount of light entering the lens. With the Variable Density filter it is possible to shoot with fast lenses like a 50mm f/1.4 lens wide open at f/1.4 in full sun for a very shallow depth of field. Or, to slow down the shutter speed to where the shutter can be open for several seconds in full sunlight. This is enough to create artistic blurring shots of motion on water, cars, people or almost anything that moves. The creative possibilities are endless. For best results use a tripod when photographing with slow shutter speeds.

Key features:
* Filter Factor NDx3-NDx400. Approx 1.5 to 9 stops light reduction.
* Black Almite Frame. Satin finish reduce reflections.
* Low Profile Frame. Avoids vignetting on super wide-angle lenses, will accept a clip-cap.
* Rotating Inner Ring. With scale indicating max. through to min. settings.

The antistatic coating acts like a force field around the filter to repel dust. Perfect for environments where dust is common, these filters require less frequent cleaning and maintenance than traditional filters. The hardened top-layer is water repellent, stain and scratch resistant, and cleans easily when smudges or fingerprints are introduced to the surface.

Circular polarizing filters allow photographers to achieve creative, in-camera, effects not possible after the image is created. A polarizing filter simply filters out unwanted reflections from non-metallic surfaces such as water and glass in addition to light reflecting off moisture and pollution in the atmosphere. By rotating the ultra-smooth filter you can select just the right amount of filtration needed to achieve the creative effect. This results in bluer skies, greener leaves, reduced or eliminated reflections, and greater clarity in your final image.

The professional grade high-performance optical glass used yields very high light transmission rates which means the filter has virtually no effect on the colour balance, contrast or clarity of the final image beyond its polarizing effects.

The filter features a lightweight, two-piece, very low-profile aluminium frame to house the glass. The low-profile frame eliminates vignetting when used on ultra-wide-angle lenses.

Hoya's popular HMC (Hoya Multi Coated) filters are renowned for their ability to minimise reflection at the filter surfaces which reduces flare and ghosting. The result is an average light transmission of over 97%, giving sharp contrast and well balanced colour. Hoya HMC filters are recommended for enhancing the performance of today's multi-coated lenses.

This 58mm HMC Circular Polarising filter offers colour and contrast enhancement. It allows you to select which light rays enter your camera lens and remove unwanted reflections from non-metallic surfaces such as water, glass etc. It also filters out atmospheric haze enabling colours to become more saturated and appear clearer, with better, sharper contrast. This polarising effect is often used to increase the contrast and saturation in blue skies and white clouds. Hoya's polarising filters do not affect the overall colour balance of a shot. Circular polarising effects are invaluable to photographers at any level of interest.

Key features of Pro1D filters:
* Digital Multi-Coated. These filters greatly reduce the appearance of lens flare and ghosting caused by reflections.
* Black Almite Frame. The black matte aluminium satin-finish Almite frame reduces reflections.
* Black Rimmed Glass. This reduces light reflection around the filter edge.
* Low Profile Frame. Ultra-thin filter frames to help avoid vignetting on super wide angle lenses. Also designed to hold a lens cap.
* Knurling Edge Frame. Equipped with a straight knurling edge for non-slip, easy attachment and removal.
* UV Protected Case. Filter cases are UV protected to further lengthen the life of filters.

This 40.5mm Pro1D Circular Polarising filter offers colour and contrast enhancement. It allows you to select which light rays enter your camera lens and removes unwanted reflections and glare from non-metallic surfaces such as water, glass etc. A camera angle of 30 degrees from the reflecting surface is ideal for maximum effect. It also enables colours to become more saturated and appear clearer with better contrast -  without affecting the overall colour balance of a shot. It is often used to increase the contrast and saturation in shots of blue skies and white clouds.

Light rays which are reflected become polarized. Polarizing filters are used to select which light rays enter your camera lens. They can remove unwanted reflections from non-metallic surfaces such as water or glass and also saturate colours providing better contrast. This effect is often used to increase the contrast and saturation in blue skies and white clouds, without affecting the overall colour balance of a shot.

There are two kinds of polarising filter: PL (Linear Polarising) and CIR-PL (Circular Polarising). They both have the same effect of reducing flare, but there are differences in the way each works in combination with your specific camera - so it is important to choose the correct version. Most auto focus SLR cameras are equipped with semi-silvered mirrors or prisms and work best with Circular Polarisers. Linear polarizers are used with most video and manual focus photo cameras. Consult your instruction manual.

This 86mm standard Linear Polarising filter comes with a scale on the outside ring. The polarising effect can be seen through camera's viewfinder and changed by rotating the filter. The filter factor varies according to how the filter is rotated and its orientation to the sun. Filter factor is between 2.3 and 2.8 (approx. +1.3 stops).