Kipon announces the Baveyes EF and M42 “Speed Booster” adapters. – 43 Rumors
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Focal Reducer using m42 Old lenses like helios -takumar good or bad?: Micro Four Thirds Talk Forum: Digital Photography Review
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Amazon.com : Pixco Lens Kit Speed Booster Focal Reducer Lens Adapter Suit for M42 Lens to Sony E Mount NEX Camera+39mm-42mm Step-up Metal Filter Adapter Ring 39mm Lens to 42mm Accessory(M42-NEX) :
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LensCraze: Focal Reducer 0.72x with EF mount [m4/3] first impressions
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