
Made of brass - brass is the best material for filters and adapter rings!
The Nisin Step-Up Brass thread conversion ring is made of a brass alloy. Brass is just the right amount of hardness to be durable, yet it is a flexible material so the filter will withstand tightening and won't shear off like aluminum adapters can. This means you take better care of your lens threads and filters.
The NiSi Step-Up adapter ring allows you to attach a larger filter to the filter threads of your lens. This allows you to use a larger special filter you already have on a lens with a smaller thread size. There's no need to buy a high-quality special filter in a different size, for example, one filter and this thread adapter will do the job!
The first number in the product name is the male thread, i.e. the size of the lens thread, and the second number is the larger female thread, i.e. the size of the filter to be used, for example.
In other respects, this Nisin adapter is of better quality. The inner surface is treated to reduce reflections, a feature that is important for long exposures. The outer surface of the ring has teeth that make it easier to attach and detach the adapter.
