Tiffen 67mm Variable Neutral Density FilterLens filters are a simple way to improve the pictures you take and add additional creative options to your photography arsenal. There are a variety of different types of filters that do everything from protecting the lens from damage to increasing image contrast so colors appear more vibrant. The Tiffen 67mm Variable Neutral Density Filter reduces the amount of light entering the lens which allows you to do a number of things. Reducing the amount of