With impressive reach and versatility, the M.Zuiko Digital ED 150-400mm f/4.5 TC1.25X IS PRO, from Olympus, is a super-telephoto zoom lens characterized by its expansive range, built-in teleconverter, and relatively sleek design for handheld use. Built for Micro Four Thirds cameras, this zoom offers a 300-800mm equivalent focal length range, which can be extended even further using the integrated 1.25x teleconverter for an effective 1000mm equivalent focal length. The constant f/4.5 maximum aperture affords consistent illumination throughout the zoom range and is reduced slightly to f/5.6 when the teleconverter is in use. Additionally, a series of specialized low dispersion and high refractive index elements help to reduce a variety of aberrations throughout the zoom range in order to achieve high clarity and sharpness. A Z Coating Nano has been applied, too, which controls flare and ghosting for higher contrast and accurate color rendering in strong lighting conditions.

Complementing the huge zoom range is an apt image stabilization system that compensates for camera shake in order to deliver sharp photos and videos. This system can also work in conjunction with camera-based stabilization, via Sync IS, for even more powerful stabilization to suit working at the extreme ends of the zoom range. The lens also has an integrated tripod collar for balanced support when shooting from a tripod and, as a PRO lens, it sports a weather-sealed design that is dust-, moisture-, and freeze-resistant for working in inclement conditions.