Canon FA-DC58D Filter Adapter for PowerShot G15 - Ace Photo
Opteka Metal Lens/Filter Adapter Ring for Canon Powershot G1X (FA-DC58C Replacement) - Walmart.com
Amazon.com : Fotodiox 58mm Filter Adapter for Canon Powershot G1x, G1 X to use 58mm Filter and Add-on Lenses, Replacing FA-DC58c : Camera Lens Polarizing Filters : Electronics