PANASONIC LEICA DG VARIO-SUMMILUX 25-50MM F/1.7 ASPH.Micro Four Thirds System 50 100mm (35mm Equivalent) Aperture Range: f 1. 7 to f 16 One Aspherical Element One UHR Element, Three ED Elements Linear AF Motor, Focus Clutch Mechanism Stepless, De Clicked Aperture Ring Splash, Dust, and Freezeproof Design ###split### Versatility within a short telephoto range, the Leica DG Vario Summilux 25 50mm f 1. 7 ASPH., from Panasonic, is a 50 100mm equivalent zoom for Micro Four Thirds mirrorless cameras. Ideal