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Step up step down rings photography.
These adapters known as step up and step down rings allow filters designed to fit one size of lens to be adapted to lenses with larger or smaller filter thread sizes.
They adjust a larger lens thread to accommodate a smaller filter.
1 things worth knowing about step up step down rings.
When using step down rings and filters one can notice a lot of vignetting.
They enable you to adapt filter and lens accessories with smaller thread sizes to lenses with larger thread sizes.
The opposite of step up rings are step down rings which essentially do the reverse.
They don t have any glass or electronics so they have no bearing on the optical quality or features like autofocus.
Stepping ring screws onto camera filter screws onto stepping ring.
Basically the corners are getting less light because of the tunnel that is created.
Why and when you need a step down ring.
There are usually used to mount accessories.
For example they allow you to attach a 52mm filter to a lens with a 72mm thread size.
Step down ring top and step up ring bottom.
Step up rings are the most commonly used form of filter adapter ring and enable photographers to use filters designed for lenses with larger filter thread sizes on lenses that normally accept smaller filters.