{"id":5768,"date":"2026-07-12T19:55:45","date_gmt":"2026-07-12T18:55:45","guid":{"rendered":"https:\/\/iso3200.org\/blog\/?page_id=5768"},"modified":"2026-07-12T20:22:16","modified_gmt":"2026-07-12T19:22:16","slug":"microfourthirds-mount-lenses","status":"publish","type":"page","link":"https:\/\/iso3200.org\/blog\/microfourthirds-mount-lenses\/","title":{"rendered":"microFourThirds mount lenses"},"content":{"rendered":"\n

MicroFourThirds (MFT) is a mirrorless bayonet mount jointly developed by Olympus and Panasonic, introduced in 2008. It has a flange focal distance of 19.25mm, a throat diameter of 38mm, and uses a 17.3\u00d713mm sensor (4:3 aspect ratio, roughly 2.0\u00d7 crop versus 35mm). The mount has three tabs and is fully electronic, supporting autofocus, electromagnetic aperture, and in-lens or in-body stabilization; there are no mechanical linkages between the lens and the camera. It shares its sensor format with the earlier FourThirds DSLR mount, whose lenses are adaptable with an adapter.<\/p>\n\n\n\n

Note:<\/mark><\/strong> This reference currently counts only autofocus lenses.<\/p>\n\n\n\n

Jump to: Olympus Zuiko Digital<\/a><\/strong>, Leica D<\/a><\/strong>, Sigma<\/a><\/strong> lenses; Adapters<\/strong><\/a>, Compatibility<\/strong><\/a>.<\/p>\n\n\n\n

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Olympus M.Zuiko Digital lenses<\/h2>\n\n\n\n

Pro-grade lenses feature tighter build tolerances and weather resistance. Two Olympus Digital body cap lenses don’t carry M.Zuiko branding; while they are fully compatible with the mount, they don’t offer autofocus or aperture control. The M.Zuiko Digital 17mm F2.8 lens is the only lens featuring a unit-focusing mechanism, where the whole optical block is moved to focus \u2013\u200d like SLR\/DSLR lenses usually do.<\/p>\n\n\n\n