Tiffen 82mm Variable ND Filter

The Tiffen Variable ND filter is a unique and flexible tool, affording you the convenience of using several Neutral Density filters in one. Primarily used for controlling depth of field and exposure, the Variable ND is being sought in the Video market as well because it is fast, easy to use, small, lightweight, and does not require additional accessories. Neutral density filters reduce the amount of light going through the Lens into your camera. By reducing the light you are able to use of slow shutter speeds, with high speed films or Digital cameras, to Record movement/image blur in subjects such as waterfalls or any fast moving subject.---Why use a Variable ND Filter?-Neutral density Filters reduce the amount of light-going through the lens into your camera. By reducing-the light you are able to achieve the following:-Allows the use of slow shutter speeds, with-high speed Films or digital cameras, to record-movement/image blur in subjects such as-waterfalls, clouds or any fast moving subject-Gives you full control over your depth of Field. You-are able to decrease depth of Field by using wider-apertures, which helps separate subjects from-their background (subject matter in Focus while-your background is blurred)-Allows you to shoot high speed Film (above ISO-400) in bright outdoor situations by reducing-effective ISO-Enables cine and video cameras (which have-fixed shutter speeds) to Film subjects such as-snow, sand or other bright scenes which could-cause overexposure-The Tiffen Variable ND filter operates on the same-principle as a Circular Polarizer - rotate until you-reach your desired effect and shoot. It allows you-to have continuous control over the amount of light-coming through your lens in an approximate range-of 2 (ND 0.6) to 8 (ND 2.4) stops - while maintaining-the integrity of your image.