Tiffen 67mm Variable Neutral Density Filter 2 to 8-Stop Light Control

The Tiffen variable ND filter is a unique and flexible tool, affording you the convenience of using several neutral density filters in one. Neutral density filters reduce the amount of light going through the lens into your camera. By reducing the light you can 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) 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. Primarily used for controlling depth of field and exposure, the variable ND is 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. 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. Box Contains 1 x Filter 1 x Instruction manual 1 x Filter pouch.