Canon Knowledge Base - Attaching the tele-converter lens (PowerShot G15)
Kiwifotos Lens Adapter Tube La-58g15 Provides 58mm Filter Mount For Canon Powershot G15 Digital Camera - Buy Lens Filter Adapter For Powershot G15,Filter Mount Adapter For Canon G15,Lens Filter Adapter For Powershot
Canon TC-DC58E 1.4x Tele-Converter for PowerShot G15 Digital Camera 6926B001 4960999917658 | eBay
Canon Powershot G15 2.2x High Definition Super Telephoto Lens, (Includes Necessary Lens Adapter) + Nw Direct 5 Piece Cleaning Kit - Newegg.com
HD WIDE ANGLE WITH MACRO LENS FOR CANON POWERSHOT G15 G16 (58mm Size, Tube/Ring adapter not included) - Walmart.com
CPL Polarizer on Canon Powershot G15 with Carry Speed MagFilter Threaded Adapter - YouTube