Panasonic Lumix G Leica DG Vario-Elmar 100-400mm f/4-6.3 ASPH. POWER O.I.S. LensA collaboration between Panasonic and Leica seems too good to be true, but it's not! The Panasonic Leica DG Vario Elmar 100 400mm f 4 6. 3 ASPH. POWER O. I. S. Lens is the proof! Panasonic LUMIX Mirrorless Micro Four Thirds lenses deliver a no compromise approach to optical performance for modern interchangeable camera enthusiasts. As an optical partner of legendary LEICA Lenses, the LUMIX 100 400mm F4. 0 6. 3 Lens features the highest standards of