Amazon.com : 58mm Metal Lens Filter Adapter Ring for Canon SX70 HS, SX60 HS, SX50 HS, SX40 HS, SX30 is, SX20 is, SX10 is, SX1 is, SX540 HS, SX530 HS, SX520 HS
Filter Adapter For Canon Powershot SX540 HS (58mm) - Walmart.com
Canon PowerShot SX530 HS Digital Camera + 2 x Tripod + EXT BAT + Filter - 16GB - Walmart.com