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
67mm Multi-Coated 3 Piece Filter Kit (UV-CPL-FLD) for Canon SX70 HS, S – Big Mike's Electronics
Close-up Filter Set Case 1 2 4 10 Adapter Ring Canon Sx70 - AliExpress