Allows 77mm threaded filters to be used on lenses with 62mm standard filter threads. Features a durable brass frame. Knurled sides provide an easier grip. The brass construction prevents binding and jamming, making the ring easier to remove than standard aluminium step-up rings. The inside of the frame has a special anti-reflective treatment to minimise reflections. Features a matte black finish. The anti-reflective treatment is intended to make the ring suitable for long exposures.
