Nothing changes the way you see the world like High Definition², and no company does High Definition² like Opteka. In the professional setting, Opteka's glass optics define High Definition. Change the way you view the world. Enjoy outstanding detail, enjoy enhanced clarity, enjoy Opteka. An Opteka filters can actually improve the image that your camera receives, and it's about the only accessory that can. By eliminating flare and ghosting, the ugly cousins of reflection and refraction, before they get to your camera's original lens system, your camera gets a much cleaner image. UV Filter - A must for any camera. Penetrates haze, adds warmth, and protects your valuable lens from scratches, dirt, fingerprints, etc. Leave it on your lens at all times.Polarizing Filter - For shooting in bright sun, at beaches, snow, ect. Controls bright light entering lenses for a better balanced color image. Darkens blue skies and reduces reflections from non-metallic surfaces.Fluorescent Filter - Reduces the greenish cast common to fluorescent lighting and produces pleasing, natural results, particularly in flesh tones.