Panasonic Leica DG Vario-Elmar 100-400mm f/4.0-6.3 Asph. Power O.I.S. Review

The Panasonic Leica DG Vario-Elmar 100-400mm f/4.0-6.3 is a telephoto zoom designed for Micro Four Thirds cameras, delivering an equivalent focal range of 200-800mm in full-frame terms. That reach makes it a serious option for wildlife, sports, and aviation shooters working in the MFT system. The Leica branding signals a co-developed optic with an eye toward optical quality, and the inclusion of Power O.I.S. (Optical Image Stabilization) is essential at these focal lengths, especially on bodies without in-body stabilization or when you need the extra steadying on top of IBIS.

At just under $1,600, it sits in the premium tier for MFT glass but remains far more affordable than comparable full-frame supertelephoto zooms. The variable aperture is typical for this class and keeps size and weight manageable, though you'll want good light or a high-ISO-capable body for fast action. For MFT shooters who need long reach without the bulk and cost of larger systems, this lens occupies an important niche.