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The 77mm Offset Step-up Ring with 100mm Outside Diameter from Cavision is an AR series offset adapter ring. The ring screws onto the front of a lens with 77mm filter thread and provides a 100mm O.D. surface for mounting a clamp-on matte box. The offset adapter ring is useful for clamping on a matte box when the matte box needs to be pushed back slightly further on the lens, to avoid vignetting.
77mm rear thread (male)
100mm outside diameter
In the Box
Cavision 77mm Offset Step-up Ring with 100mm Outside Diameter
6-Month Limited Warranty for Personal Use
3-Month Limited Warranty for Commercial Use
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Rear thread: 77 mm (male)
Front Outside Diameter: 3.94" (100 mm)
Thickness: 0.35" (9 mm)