The #217 39mm Lens Size to 52mm Filter Size Step-Up Ring from Heliopan 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. For example, a 39mm - 52mm Step-Up Ring would allow you to use 52mm filters on lenses with a 39mm front filter thread size. A series of these reasonably-priced adapter rings is far less expensive than buying the same filter in two sizes.
Heliopan has been a leader in the photo/filter industry since 1949. They are known for their high- quality and production standards. Heliopan offers a full range of brass adapter rings that are renowned for the durability and reliability. Less expensive stepping rings have a tendency to "jam" or jump threads. However, Heliopan brass adapters screw on and off with greater ease and demonstrate less chance of damage.