Sony FDR-AX33 HD (High Grade) Ultra Wide Angle Conversion Lens (Low Profile) This Triple Coated High Definition 0.5x (0.48x Actual) lens for 52mm diameter is a high grade, wide-angle converter. 4 Groups/ 4 Elements A high-speed, fully automatic lens that features optical glass. The lens attaches easily and directly to any camera or camcorder with a 52mm thread. Uses 82mm Filters