Canon Support for 43mm Protect Filter | Canon U.S.A., Inc.
Focus Camera 43mm Circular Polarizing Lens Filter (cpl) : Target
Tiffen 43mm ND 0.6 Filter (2-Stop) 43ND6 B&H Photo Video
FUJIFILM 43mm Protector Filter 16489246 B&H Photo Video
Hoya 43mm NXT Plus UV Filter
B+W 43mm T-PRO UV Filter 1097748 B&H Photo Video
Amazon.com : (2 Pcs) 37-43MM Step-Up Ring Adapter, 37mm to 43mm Step Up Filter Ring, 37mm Male 43mm Female Stepping Up Ring for DSLR Camera Lens and ND UV CPL Infrared Filters :
Chiaro Pro 43mm 98-UVATS UV Filter 98-UVATS43 B&H Photo Video
Leica E43 UVa II Filter (Black) 13032 B&H Photo Video
NiSi 43mm PRO Nano HUC UV Filter | NiSi Optics USA