Check Out Lens Kit For The Canon Powershot G12, G11, G10 Digital Camera Includes 3.5X Telephoto and .43x Wide Angle Lens with Adapter Tube + 3pc High Res Filter Kit + BP
Canon G10 G11 G12 Lens Filter / Adapter Tube 58mm 58 Digital camera 814733012083 | eBay
Canon Powershot G12 Filter Adapter (Alternative For Canon FA-DC58B, Part# 4721B001) + High Grade Multi-Coated, Multi-Threaded 3 Piece Lens Filter Kit (58mm) Made By Optics - Walmart.com