Sigma Adapter Ring
Sigma Adapter Ring for EM-140 DG Macro Ringlight Flash
Hama Step-Up Ring 67-77mm
The 67-77mm Step-Up Ring is a reliable and economical way to use filters.
Hama Step-Up Ring 30,5-37mm
The Hama 30,5-37 mm Step-Up Ring is a reliable and economical way to use filters. For example, a 30,5-37mm Step-Up ring would allow you to use 30,5 mm filters on lenses with a 37 mm front filter thread size.