Olympus Adapter MMF-3 4/3 Mount Lens To Micro Four Thirds Body Review

The Olympus MMF-3 is a Four Thirds to Micro Four Thirds mount adapter that lets you use legacy Four Thirds lenses on modern Micro Four Thirds camera bodies from Olympus and OM System. It's the third generation of Olympus's official adapter, designed to maintain autofocus and electronic communication between older lenses and newer mirrorless bodies. At $163 MSRP, it sits at the premium end of the adapter market, reflecting Olympus's commitment to full compatibility and build quality. The adapter is particularly relevant for photographers who've invested in Four Thirds glass and want to continue using it on compact mirrorless systems without sacrificing functionality. It's available in multiple condition grades on the used market, which can offer savings over retail. While third-party adapters exist at lower price points, the MMF-3 offers the peace of mind of first-party engineering and support.