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Extension Ring - 58mm (#A317) 
Manufacturer Code 203924553
Rating No Rating
Some wide-angle and video zooms have a retractableactable lens assembly which means that the COKIN Filter Holder may inhibit the use of some focal lengths. To remedy this situation, use a protective screw-in filter (UV or SKY1A) and add one or several extension rings between the screw-in filter and the adaptor ring of the filter-holder. Extension rings are also useful with some home video cameras which have elements obstructing the free rotation field... Readmore
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;void(0); "Extension Ring - 58mm (#A317)")
