Panasonic Objektiv LEICA DG VARIO-ELMARIT 50–200 mm / F 2,8–4,0 ASPH.
Leica 50-200mm f2.8-4 review | Cameralabs
Amazon.com : Panasonic LUMIX Professional 50-200mm Camera Lens, G Leica DG Vario-ELMARIT, F2.8-4.0 ASPH, Dual I.S. 2.0 with Power O.I.S, Mirrorless Micro Four Thirds, H-ES50200 (Black) : Electronics