Breakthrough Photography 77mm aluminum adapter ring for square filters
Adapter for X100 Square Filter Holder.
The X100 Holder was designed from the ground up to eliminate vignetting down to 16mm on a full-frame sensor. And with its innovative snap-lock mechanism it makes attaching and detaching the holder fast and secure.
INNOVATIVE SNAP-LOCK: The X100 Holder for easy one-handed operation with a unique and oversized CNC machined Snap-Lock knob.
Press the filter holder against the adapter ring and it immediately locks into place with a snap! Focus on the shot and not the holder every time you detach/reattach to the adapter ring.