Optical Image Stabilization at up to 5 Stops* of Shake Correction. One Fluorite Element and Two UD Elements for High Image Quality. Highly Resistant to Dust and Water, and Improved Durability Even in Harsh Conditions. Three Image Stabilization Modes for Outstanding Results. IS Mode 3 Effective When Tracking Moving Subjects and Assists When Panning**. Minimum Focusing Distance Shortened from 3.9 ft. to Approx. 3.3 ft. (1.2m to 1m). Optimized Lens Placement and Coatings Minimize Ghosting and Flare. Circular Aperture (9 blades) for Beautiful, Soft Backgrounds.