NiSi Brass Pro 40.5-52mm 升階環

Finally a step-up ring that doesn't bind or get stuck on my filter threads; the brass is nice and smooth, and the knurled sides make it easy to grip even with cold fingers.

Brass feels way more solid than the aluminum rings I've used before, and the knurled sides make it easy to tighten even with cold fingers. Threads on both ends are smooth and precise, so my 52mm filters sit perfectly flush on the 40.5mm lens.

The knurled grip is a lifesaver when switching filters in the field, and the brass build feels much sturdier than the aluminum ones I’ve used before. It threads on smoothly every time, with no annoying cross-threading.