Tiffen 52-46mm Step-Down Ring (Lens to Filter) Pro Co Sound EXM-3 Prism Type Porro Magnification 7

Prism Type Porro Magnification 7

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Tiffen 52-46mm Step-Down Ring (Lens to Filter) Pro Co Sound EXM-3 Prism Type Porro Magnification 7The Tiffen 52 46mm Step Down Ring is a reliable and economical way to use filters. For example, a 52 49mm Step Down ring would allow you to use 49mm filters on lenses with a 52mm front filter thread size. Care must be taken using Step Down rings in order to avoid vignetting. Note: Tiffen also produces Step Up Rings which allow larger sized filters to be used on lenses with smaller front filter thread sizes. For example, a 49 52mm Step Up Ring would