Fotodiox Circular Polarizer (CPL) Filter – Fotodiox, Inc. USA
WOWPIC CPL Filter a Polarizing Filter 49mm/52mm/55mm/ 58/62/ 67/72/ 77/ 82mm Camera For Canon Nikon DSLR Camera Lens PK ZOMEI - Price history & Review | AliExpress Seller - TIANYU Photographic Digital Store | Alitools.io
49mm 3PC Filter Kit CPL UV FLD for Leica 50mm f/1.5 Nokton [Black or Silver] Lens - Walmart.com
Amazon.com : PROfezzion 49mm Circular Polarizer Filter for Canon R10 EOS M50 M5 M6 Mark II M200 with EF-M 15-45mm Kit Lens, Ultra Slim Multi-Coated Circular Polarizing Filter 12 Layers CPL Camera
NiSi HUC C-PL PRO Nano 49mm Circular Polarizer Filter | NiSi Optics USA