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Step up ring vs step down.
If you have 77mm lens threads and want to fit a 72mm filter you need a step down ring.
The opposite of step up rings are step down rings which essentially do the reverse.
Stepping ring screws onto camera filter screws onto stepping ring.
There are usually used to mount accessories.
If you do there s a good chance you ll damage the lens s thread.
Nerd facts on step up rings polarpro nd pl filters knurling duration.
For example they allow you to attach a 52mm filter to a lens with a 72mm thread size.
They adjust a larger lens thread to accommodate a smaller filter.
It starts from the lens or rather the filter thread on the front of the lens.
Things worth knowing about step up step down rings.
Step up step down rings don t work well with lens hoods so you ll likely have to do without the hood.
If you wish to use an attachment that is a larger diameter than your lens filter thread you need a step up ring.
Filter ring adapter dviocnd 18 metal step up ring set includes 9pcs step up ring set 9pcs step down ring set step up lens adapter ring for filters for canon nikon sony olympus dslr camera black.
Basically the corners are getting less light because of the tunnel that is created.
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As with regular filters don t over tighten them.
Step down rings do the exact opposite of a step up ring.
Gerald undone 23 903 views.
A step down ring does the opposite with possible vignetting issues.
If you have 72mm lens threads and want to fit a 77mm filter you need a step up ring.
Step down ring top and step up ring bottom.
And conversely if you wish to use an attachment that is smaller than your lens filter thread you would need a step down ring.
A ring that is larger on the filter side than it is on the lens side is known as a step up ring while a ring that is larger on the lens side than it is on the filter side is known as a step down ring.
When using step down rings and filters one can notice a lot of vignetting.
Save money when buying filters and avoid this trap duration.