NANO SURFACE COATING: Professional, high quality LEICA DG VARIO ELMARIT camera lens optics with Panasonic’s Nano Surface Coating to reduce unwanted ghosting and flaring for crystal clear pictures (21 Elements in 15 Groups, [2 UED Elements]) HIGH SPEED AUTO FOCUSING: Upgraded faster focus tracking via a 240 fps linear motor performs smooth aperture changes so there are no sudden jumps in exposure for improved video performance ADVANCED OPTICAL IMAGE STABILIZATION: Panasonic POWER O.I.S. compatible with enhanced LUMIX Dual I.S. 2.0 LUMIX Mirrorless cameras immediately compensates even large camera shake and vibrations for sharp, blur free photos ULTRA TELEPHOTO ZOOM LENS: Ultra telephoto zoom lens F2.8 4.0 (67mm lens filter threads) suitable for wildlife photography; Compatible with optional table converters DMW TC14 and DMW TC20 RUGGED HIGH PERFORMANCE, DESIGN: Durable metal body camera lens braves the elements in nearly any kind of weather or shooting location (Splashproof / Dustproof / Freezeproof)