K&F Concept 55–77 mm Magnetic Step-Up Adapter Ring

The K&F Concept 55–77 mm magnetic adapter ring screws into a 55 mm lens thread and holds K&F Concept 77 mm magnetic filters at the front. You can use one set of larger magnetic filters on a lens with a smaller thread, too, and attach or remove the filters in one movement. The ring works only with K&F Concept magnetic filters.

Precise CNC machining

The ring is CNC-machined from high-strength, impact-resistant aviation-grade aluminium alloy. Non-slip knurling around the edge makes screwing on and off easy, and the black anodised finish prevents reflections while shooting.

55 mm thread, 77 mm magnet

On the lens side the ring has a 55 mm thread, at the front a magnetic mount for 77 mm filters. The ring stays screwed onto the lens and you simply place K&F Concept magnetic filters on it – no screwing and no risk of a jammed thread.

How to find your thread size

The filter thread diameter is printed inside the lens cap or on the lens barrel. The ring suits lenses with a 55 mm thread.

For the K&F Concept magnetic system only

The ring is designed exclusively for K&F Concept 77 mm magnetic filters. Non-magnetic filters and non-magnetic adapter rings cannot be attached to it.