Step-up and step-down rings in metal for adapting filters to different lens thread sizes.
Step-up and step-down rings let you use one set of filters on lenses with different thread sizes, which saves money and space in your bag. Step-up rings fit larger filters on smaller lenses, which is the best choice as it avoids vignetting, while step-down rings fit smaller filters on larger lenses and may cause dark corners at wide angles. Check the thread sizes printed on your lenses and filters before ordering. Metal rings are more durable than plastic rings. Sets with many sizes are useful for photographers with several lenses.
Filters: Camera Filters.
Related categories: Lens & Accessories, Auxiliary Lens, Extension Ring