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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.
Blue Heron Bridge Weekday Photo Workshop, April 7-10
Blue Heron Bridge UW Photo Workshop May 7-10
Focus Grand Cayman August 29 - September 5, 2015