Features: UV filters reduce haze and improve contrast by minimizing the amount of ultraviolet light. Especially useful in areas of high altitude or snow, eliminating the undesirable blue cast. CPL filters (Circular Polarizer) are great for removing unwanted reflections from non-metallic surfaces such as glass or water. Take richer scenic shots and notice improved clarity in distant objects by cutting through haze and increasing color saturation. FLD filters allow for shooting under fluorescent lighting. Bring warm natural lighting to rooms that would otherwise be washed out by unappealing fluorescent lights. These filters are double threaded allowing additional filters, lenses, or attachments to be mounted on top. The addition of a lens hood can help prevent flares-those circles of light that can accompany images where a strong light source is just outside the frame. Professional tulip shape design (also known as flower or petal shape) allows for greater versatility. Protects your delicate lens from dust, dirt, and scratches. Easy to use. Simply pinch the center to quickly attach to the front of your camera lens. Ultra gentle. Extremely fine microfiber leaves zero scratches, streaks or marks.