The Tiffen Bay 50 to Series 7 Ring is a reliable and economical way to use filters. For example, a Bay 50 to Series 7 Adapter ring would allow you to use series 7 filters on the front of the older Hasselblad lenses that use B50 filters.Requires Series 7 retaining ring.
Small, efficient way to save space and money at the same time
Allows user to buy fewer filters but continue to shoot the images they want
Tiffen, a leader in the production of filters for still, video and cinematography, also produces these rings to assist photographers in their work