rear teleconverters comprise a Super Paragon 2x for Contax, a Sicor 2x and Marexar 2x both for Pentax-K, a Vivitar 2x-21 for Olympus OM, a Vivitar 75-205mm 2X Matched Multiplier for M/MD, two DOI HQ 7 2x for PK, one boxed, a Vivitar 70-150mm 2x Matched Multiplier for O/OM, a Soligor 2x to fit OM (boxed), a Hanimex 2x for OM, a Clubman 2x (KO), front converters comprise an AICO 1.4x telephoto video lens, a Sigma 1.4x and 0.7x video set in a case and a Vitacon 0.45x Semi-Fisheye, (14), a Lot