Digital Concepts High Resolution 3-piece Filter Set (UV Fluorescent Polarizer) For The Sigma Zoom Telephoto f/4-5.6 APO DG Macro Autofocus Lens fo Multi-coated optical glass for enhanced optical resolution.Includes protective carrying case UV FILTER POLARIZER FILTER FLUORESCENT FILTER Backed by a 15 year USA warranty. - Includes DB ROTH Micro Fiber Cleaning Cloth