Tiffen 4943AD 46mm to 43mm Step Down Adapter Ring - Lens Filter

The Tiffen 4943AD is a 46mm to 43mm step down adapter ring designed for photographers who want to use their existing 43mm filters on a lens with a 46mm filter thread. Made in the United States, this adapter features Tiffen's precision-machined metal construction, which provides smooth threading and a secure fit that resists cross-threading. At just 0.1 lb, it adds negligible weight and bulk to your setup.

Step down adapters are useful when you already own filters in a smaller size and want to avoid purchasing duplicates for every lens diameter you own. However, because a 43mm filter is physically smaller than the 46mm lens opening, photographers should be cautious about vignetting — particularly with wide-angle lenses where the smaller ring may encroach on the edges of the frame. For standard and telephoto focal lengths, this adapter provides a simple, reliable way to expand your filter compatibility without added expense.