K&F Concept 55 mm adapter ring for matte box

The K&F Concept 55 mm adapter ring connects a K&F Concept matte box to a lens with a 55 mm filter thread. The ring screws into the lens thread and the matte box attaches to it just like to the 67–95 mm rings supplied in the kit. It is made of a strong aluminium alloy that resists oxidation, so it copes with frequent mounting and outdoor work.

For lenses with a 55 mm thread

The ring extends the K&F Concept matte box to lenses with a 55 mm filter thread, for which the kit has no ring. On one matte box you can switch between lenses of different diameters just by changing the ring.

For K&F Concept matte boxes

The ring is designed for K&F Concept matte boxes; it is not intended for matte boxes of other brands. Separate rings are available for other thread diameters.