The Olympus MC-20 2x Teleconverter is a high-quality teleconverter designed specifically to work with the Olympus 40-150mm f/2.8 ED PRO, 100-400mm f/5-6.3 ED IS, 150-400mm f/4.5 TC1.25X ED IS PRO, 300mm f/4 IS PRO, and OM SYSTEM 150-600mm f/5-6.3 ED IS. Key features include:

• EFL of 80-300mm on the Olympus 40-150mm f/2.8 ED PRO
• EFL of 600mm on the Olympus 300mm f/4 PRO
• EFL of 200-800mm on the Olympus 100-400mm f/5-6.3 ED IS
• EFL of 300-800 on the Olympus 150-400mm f/4.5 TC1.25X ED IS PRO
• EFL of 300-2400mm on the OM SYSTEM 150-600mm f/5-6.3 ED IS

More Reach. Compatible only with the Olympus 40-150mm f/2.8 ED PRO, Olympus 100-400mm f/5-6.3 ED IS, Olympus 150-400mm f/4.5 TC1.25X ED IS PRO, 300mm f/4 IS PRO, and OM SYSTEM 150-600mm f/5-6.3 ED IS lenses, the Olympus MC-20 2x Teleconverter gives you an effective focal length of 80-300mm, 200-800mm and 600mm, respectively. Please note that this additional reach comes at the cost of two stops of light loss.

High Build Quality and Optics. The MC-20 is perfectly matched to the 40-150mm, 100-400mm, 150-400, 300mm PRO, and OM SYSTEM 150-600mm f/5-6.3 ED IS with a metal construction that’s dust-, freeze-, and splash-proof and uses six optical elements for minimum image degradation.