Panasonic/Leica's MFT super-telephoto — 200-800mm equiv Mark I with Power OIS. See ID 515 for Mark II.
The Panasonic Leica DG Vario-Elmar 100-400mm f/4-6.3 ASPH Power OIS (H-RS100400) was released in 2016 as the super-telephoto zoom for Micro Four Thirds, covering 200-800mm equivalent. Twenty elements in 13 groups including aspherical UED, UED, and ED elements. Nine circular aperture blades. 72mm filter thread. At 985g. 1.3m MFD constant throughout zoom range.
Twenty elements in 13 groups (1 aspherical UED + 1 UED + 2 ED elements). Nine circular aperture blades. The 72mm filter thread. At 985g the lens is substantial. Minimum focus distance of 1.3m (constant throughout zoom range). Power OIS — no manufacturer stop-count stated; approximately 2-3 stops lens-only, up to 4-5 stops Dual I.S. with compatible Panasonic bodies. Variable aperture from f/4 at 100mm to f/6.3 at 400mm. MFT image circle (200-800mm equivalent).
The 100-400mm covers 200-800mm equivalent on MFT — the primary super-telephoto reach range for wildlife, birds, and aviation photography on the compact MFT system. The Panasonic Leica DG branding indicates Leica optical design specification. Dual I.S. coordination with compatible Panasonic bodies adds in-body IBIS contribution alongside Power OIS. The 1.3m MFD remains constant throughout the full zoom range.
On the used market the Panasonic Leica DG Vario-Elmar 100-400mm is available at MFT super-telephoto pricing. Condition checks: Power OIS engagement, AF response, 72mm front element for marks, zoom ring smoothness. Dual I.S. requires compatible Panasonic body. Compatible with all Micro Four Thirds bodies.