These are the best Olympus lenses for wildlife photography when you want long reach, fast tracking, and weather-sealed confidence in a handholdable kit that can hike all day and react in an instant. The flagship choice is the M.Zuiko Digital ED 150–400mm f/4.5 TC1.25x IS PRO (300–1000mm equiv. with the built-in teleconverter), whose Sync IS, internal zoom, and tank-tough sealing make it the do-it-all for birds, mammals, and distant action; it balances beautifully on OM bodies for smooth pans and razor bursts. Prime shooters will love the M.Zuiko Digital ED 300mm f/4 IS PRO (600mm equiv.), a brutally sharp, stabilized super-tele that takes the MC-14 and MC-20 converters gracefully for 840–1200mm equiv. reach while maintaining contrast and quick AF—perfect for raptors, shorebirds, and shy mammals at dawn. For flexible, budget-friendlier reach, the M.Zuiko Digital ED 100–400mm f/5.0–6.3 IS (200–800mm equiv.) delivers crisp files, close-focus “near-macro” for dragonflies and lizards, and optical stabilization that pairs nicely with IBIS; the M.Zuiko Digital ED 150–600mm f/5–6.3 IS (300–1200mm equiv.) pushes even farther for small or distant subjects in open country, with robust sealing and practical handling from blinds or truck windows. If you split time between large wildlife and tighter habitats, the M.Zuiko Digital ED 40–150mm f/2.8 PRO (80–300mm equiv.) is a fast, focus-limiter-equipped mid-tele that excels for zoos, safaris, and larger mammals; add the MC-14 to tighten framing without losing AF punch. Macro specialists aren’t left out: the M.Zuiko Digital ED 90mm f/3.5 Macro IS PRO (180mm equiv.) brings Sync IS and exquisite micro-contrast for butterflies, amphibians, and small reptiles, while the M.Zuiko Digital ED 60mm f/2.8 Macro (120mm equiv.) remains the featherweight field classic for 1:1 detail with a comfortable working distance. Across the lineup, ZERO coatings keep backlit fur and feathers clean of flare, internal focusing helps balance and speed, focus-limiter switches reduce hunting through brush, and quiet MSC motors keep video natural. Pair any lens with OM-1/OM-5 strengths—AI Subject Detection AF for birds and animals, blackout-free bursts, Pro Capture to buffer pre-shutter takeoffs, class-leading IBIS/Sync IS for steadier framing at 800–1200mm equivalent—and you’ll nail the decisive moment more often. Practical picks: choose the 150–400/4.5 TC for the ultimate all-rounder; the 300/4 IS PRO when you want prime sharpness and converter-ready range; the 100–400 IS or 150–600 IS for long reach on a friendlier budget; the 40–150/2.8 PRO (with MC-14) for larger wildlife and mixed assignments; and the 90 Macro IS PRO or 60 Macro when small subjects and textures matter. Field tips: keep shutter speeds high (1/2000s+ for birds-in-flight), use focus limiters and back-button AF to cut misses, lean on close-focus at long focal lengths to melt busy backgrounds, and trust the weather sealing—rain, dust, and sea spray are part of the job. Whether you’re tracking swallows across reeds, isolating elk in fog, or revealing the scales on a gecko’s eye, the best Olympus lenses for wildlife photography combine extreme reach, stabilization, and rugged handling—delivering crisp, color-rich images without the bulk of larger formats.