Focal Length: 45-150mm (35mm Camera Equivalent: 90-300mm) Aperture Range: f/4.0 - f/5.6 to f/22 Micro Four Thirds Mount Lens Lumix Mega Optical Image Stabilization O.I.S. Aperture Type: 7 Blades / Circular Aperture Diaphragm Near Silent Inner Focus System with Stepping Motor Constructed with 12 Elements in 9 Groups One Ultra High Refractive Index and Two Aspherical Lenses Multi-Coated Lens Element Reduces Ghost and Flare