Sigma Em-14 Macro Flash Adaptor Ring 55mm

The Sigma 55mm Macro Flash Adapter Ring allows you to attach the EM-140 DG Ringlight Flash to be mounted on any lens with 55-millimeter filter threads. The EM-140 DG ringlight flash is ideal for close-up photography, especially medical and scientific applications, and is feature rich, with a 46-foot ISO 100 guide number. With this adapter, you can attach this high-end multi-functional macro flash to compatible digital and 35mm film SLR cameras of all popular manufacturers..