NiSi Brass Pro 49-62mm 轉接環

Finally, a step-up ring that doesn't bind up on the threads—this brass version threads on smoothly and feels much more secure than the aluminum ones I've used in the past. The thickness of the ring is just right, so my 62mm filters don't vignette at all on a 49mm wide-angle lens.

The brass threads are smooth and precise, so my filters screw on evenly without any annoying cross-threading. I’ve been using it with my vintage 49mm lens to attach a 62mm polarizer, and the fit is rock-solid—no light leaks at all.

Finally, a step-up ring that doesn’t feel like it’s going to strip the threads on my 49mm lens — the brass construction gives it a solid, premium weight, and it fits so snugly that I’ve had no light leaks even with a heavy 62mm ND filter attached.