I've recently been given a Soligor 400mm 1:6.3 telephoto lens that fits a Praktica MTL 5b with a 42mm screw thread. Does anyone know if there's an adaptor available to convert this to fit an Olympus OM camera?
Try SRB~Griturn, they make many adaptors and can do one offs. www.srb-griturn.com
No, at least not without an optical element. Film-flange distance problem. Register of the OM is shorter than of M42.