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Step-Up Ring 52mm Housing - 67mm LensThe step-up ring has 67mm female threads and 52mm male threads. This allows a housing (or camera lens) with 52mm filter threads to mount a lens that has 67mm threads.
D.E.M.A. November 19-22, Las Vegas
Blue Heron Bridge Photo Workshops, December 11 - 14
Lightroom Underwater December 16, 17
Blue Heron Bridge Photo Workshops, January 8-11
Blue Heron Bridge Weekday Photo Workshop, April 7-10