Lens Collar Tripod Mount Ring for Panasonic Lumix S 70-300 f/4.5-5.6 Macro OIS | eBay
Sold: Panasonic 100-300mm Lens with Roesch Tripod collar for Olympus & Panasonic micro 4/3 Cameras - FM Forums
Video Review: Roesch Feinmechanik Tripod Collar - YouTube
iShoot 78mm Tripod Mount Ring B(W) Lens Collar Support for Canon EF 70-200mm f/2.8L USM/is USM/is II USM/III USM, EF 100-400mm f/4.5-5.6L is USM, EF 35-350mm f/3.5-5.6L USM, EF 300mm f/4L is
Roesch Tripod Collar, for Panasonic 100-300 F/4-5.6 Micro Four Thirds at KEH Camera
Review: The Panasonic 100-300/4-5.6 Lumix G Vario for Micro Four Thirds – Ming Thein | Photographer