This Marumi 46 - 37mm Step-Down ring is used to allow attachment of 37mm accessories to various cameras or lenses that have 46mm threads. The adapter ring is made of metal and is a mere 6mm thick.
The Step-down Ring is a reliable and economical way to use filters. Using this ring saves you money since you won't have to buy the same filter two times for two different sized lenses. A series of these reasonably priced adapter rings is far less expensive than buying the same filter in two sizes.
- Small, efficient way to save space and money at the same time.
- Brass construction helps eliminate any possibility of jamming or becoming stuck on the lens.
- Allows user to buy fewer filters but continue to shoot the images they want.
More information on Marumi filters: (Link to Marumi International Website)