Amazon.com : 7artisans 7.5mm F2.8 II V2.0 Fisheye Lens with 190° Angle of View, Compatible with Olympus and Panasonic MFT M4/3 Mount Cameras : Electronics
Amazon.com : Opteka .35x HDA Super Wide Angle Panoramic Macro Fisheye Lens for Panasonic Lumix DMC-FZ20 Digital Camera : Camera Lenses : Electronics