Amazon.com: Kamerar MagFilter 55mm Threaded Adapter Ring with Carrier Bag, Magnetic Lens Filter Adapter Rings, Compatible with Canon Sony Nikon Panasonic : Electronics
D|Focus filter adapter for Panasonic Lumix 7-14 f4.0 - designed for Blackmagic Pocket Cinema Camera users - Newsshooter
67mm Camera Lens Filter Adapter Tube for Panasonic Lumix DMC-FZ200 camera LC8326 - AliExpress