BENRO FDR8249 STEP DOWN RING 82-49MM

The Step-Down Ring from Benro is an aluminium constructed ring that enables you to adapt a smaller threaded size lens onto a larger diameter filter.

On wide-angle lenses, the ring's low-profile prevents any vignetting in the image, and the flat black finish on the ring minimises reflections, which would cause lens flare as well.

Additionally, the knurling on the edge allows you to have a firmer grip of the ring when you're putting it on a lens.