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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 Photo Workshops, Palm Beach August 14-17
Lightroom Underwater August 20, 21
Blue Heron Bridge Photo Workshops, September 11-14
Tulamben, Bali Underwater Imaging Intensive October 11-18, 2014