The Tilta 72 mm adapter ring is the link between the lens and the MB-T15 Mini Matte Box. It screws into the 72 mm filter thread of the lens and the matte box then clamps onto its outer shoulder — no rods, no baseplate. The front internal thread of the ring stays free, so a standard 72 mm circular filter screws into it as well. The ring is machined from aluminium…
The Tilta 72 mm adapter ring is the link between the lens and the MB-T15 Mini Matte Box. It screws into the 72 mm filter thread of the lens and the matte box then clamps onto its outer shoulder — no rods, no baseplate. The front internal thread of the ring stays free, so a standard 72 mm circular filter screws into it as well. The ring is machined from aluminium alloy and finished in black.
The MB-T15 Mini Matte Box does not clamp onto the lens directly but through an adapter ring — it screws into the filter thread and carries the whole weight of the matte box. Tilta makes them for 52, 55, 58, 62, 67, 72, 77, 82 and 85 mm; the 67, 72, 77 and 82 mm rings come with the basic matte box kit, the rest are bought separately.
The ring does not block the lens thread: at the front it has its own 72 mm internal thread that takes a standard circular filter. It can be used together with a 4×5.65″ filter in the front slot of the matte box.

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