Olympus 300mm f/4 M.Zuiko Digital ED IS Pro Autofocus Lens for MFT (Micro Four Thirds) Black {77} with Built-In Hood, Tripod Mount, Decoration Ring

300mm f/4 Pro glass that weighs half what you'd expect

On a Micro Four Thirds body, the M.Zuiko 300mm f/4 IS Pro delivers a 600mm full-frame equivalent reach, and it does so in a package that field shooters can carry all day without a second bag. The built-in optical image stabilization pairs with Olympus bodies that support Sync IS, pushing stabilization figures well beyond what a lens-only or body-only system can achieve. ED glass elements control chromatic aberration at the long end, where fringing on high-contrast edges is a constant problem for telephoto work.

The 77mm filter thread accepts standard circular polarizers and ND filters without adapters, and the included tripod collar lets you rotate between horizontal and vertical orientation without repositioning the entire head. A built-in retractable lens hood keeps the front element protected during transport. Autofocus is fast enough for moving subjects, and the Pro-series build means it's sealed against dust and splashes, conditions that come with the territory in wildlife and sports work.

For MFT shooters who need serious reach without the weight penalty of a full-frame supertelephoto system, this lens makes a clear case for the format's strengths.

Who It's For

Wildlife photographers working on foot get 600mm equivalent reach at a fraction of the weight of comparable full-frame glass, which matters when you're hiking to a location. Bird photographers benefit from the image stabilization and autofocus combination when tracking subjects in flight or low-light perches. Sports shooters covering sideline or court action can work with the f/4 aperture and stabilization to keep shutter speeds high. Travel photographers who need reach but can't justify a dedicated long-lens bag will find the package size practical alongside a compact MFT kit.

Key Features

• 300mm f/4 telephoto on Micro Four Thirds mount
• Built-in optical image stabilization with Sync IS compatibility
• ED glass controls chromatic aberration at long focal lengths
• 600mm full-frame equivalent reach in compact, lightweight package
• 77mm filter thread accepts standard circular polarizers and ND filters
• Included tripod collar rotates for horizontal and vertical framing
• Pro-series sealing protects against dust and splashes
• Built-in retractable lens hood for transport protection

FAQ

What's the full-frame equivalent focal length on Micro Four Thirds?

600mm. The 2x crop factor of MFT doubles the 300mm native focal length, giving you supertelephoto reach on a sensor half the size of full-frame.

Does this lens work with Olympus Sync IS?

Yes. Pair it with compatible Olympus bodies and Sync IS combines the lens stabilization with in-body stabilization for additional correction, especially useful at 600mm equivalent.

What size filters does it use?

77mm. Standard thread means any circular polarizer or ND filter fits without adapters.

Is autofocus fast enough for wildlife and sports?

The AF system is built for moving subjects. Speed depends on your body's AF processor, but the lens itself is designed for professional wildlife and sports work.

How is it sealed against weather?

Pro-series construction seals the lens against dust and splashes. Not full weather-sealing in the same sense as large-diameter pro telephotos, but adequate for field work.

Does it come with a tripod collar?

Yes. The included collar lets you rotate the lens between horizontal and vertical framing without repositioning your tripod head.

What's the weight and how does it compare to full-frame telephotos?

The body copy states it weighs half what you'd expect for a 600mm equivalent telephoto. Full-frame 600mm primes run 4-5 kg; this MFT lens is substantially lighter, making all-day handheld work feasible.