The good and the bad, two cheap adapters 4/3 lens on M4/3: Micro Four Thirds Talk Forum: Digital Photography Review
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KIPON Lens Mount Adapter for 4/3 Lens to FUJIFILM X Camera
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Lens Adapter - M42 Screw Mount Lenses to Olympus 4/3 Mount Cameras – Fotodiox, Inc. USA
Olympus OM 4/3 SLR Lens to Micro Four Thirds (MFT, M4/3) Mount Mirrorless Camera Body Adapter – Fotodiox, Inc. USA
Fotga Auto-Focus AF Lens Mount Adapter for Four Thirds 4/3 Mount Lens to Micro Four Thirds MFT M4/3 Mount DSLR Camera – FOTGA Official WebSite
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Olympus OM 4/3 SLR Lens to Micro Four Thirds (MFT, M4/3) Mount Mirrorless Camera Body Adapter – Fotodiox, Inc. USA
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OLYMPUS OM4/3
Metabones C-Mount Lens to Micro 4/3 Adapter III, Chrome MB_C-M43-CH3
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Dodd Camera - VILTROX 4/3 Lens to Micro 4/3 Mount Adapter with Autofocus
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FOTGA Lens Adapter Ring for Olympus OM lens to Micro 4/3 M43 Mount Camera – FOTGA Official WebSite
