Olympus 1.4x Teleconverter with Panasonic Leica 100-400mm - YouTube
Olympus 2X MC-20 M.Zuiko Teleconverter for Select Pro Micro Four Thirds System Lenses at KEH Camera
1.4x Teleconverter MC-14 | Find a Lens | Micro Four Thirds
Panasonic Lumix S 1.4x 2x Teleconverter Review – Review By Richard
Amazon.com : OM SYSTEM OLYMPUS M.Zuiko Digital ED 40-150mm F2.8 PRO For Micro Four Thirds System Camera, Light weight powerful zoom, Weather Sealed Design, MF Clutch, Compatible with Teleconverter : Electronics