Amazon.com : 0.43x High Definition Wide Angle Conversion Lens for Panasonic Lumix DMC-GX8 (Only for Lenses with Filter Sizes of 46, 52, or 58mm) : Electronics
Panasonic unveils conversion lenses for Micro Four Thirds: Digital Photography Review
0.45x Wide Angle Conversion Lens 37mm / 52mm / 55mm for Canon Sony Nik – Roxsen.com