This NiSi 77mm Adapter Ring is designed to enable the use of a NiSi 150mm Filter Holder for Lenses with 95mm Front Filter Threads on a lens with 77mm front filter threads.
Aside from 77mm rear filter threads which allow it to connect to a lens, this NiSi adapter ring includes 95mm front filter threads. If a filter holder is not attached, this NiSi 77mm Adapter Ring may be used as a step-up ring, permitting the use of filters with 95mm rear filter threads on lenses with 77mm front filter threads. It features an aluminium-alloy construction for durability while remaining lightweight.