Step-Up Rings Explained: Sizes, Uses, and Limitations
By Lens-Aid | Published: 2026-10-22
Category: How-to Guides
Learn how step-up rings let you use filters across different lens sizes, which sizes to choose, and the trade-offs you should know before buying.
Quick Answer
A step-up ring lets you mount a larger filter on a smaller lens thread, so you can share filters across lenses instead of buying duplicates. Choose the ring that matches your lens thread (smaller) and filter thread (larger), and be aware of potential vignetting and reduced filter access.
Why You Need a Step-Up Ring
If you own multiple lenses with different filter thread sizes, you've probably faced the dilemma of buying the same filter twice. A step-up ring solves this by adapting a larger filter to a smaller lens thread. For example, a 67 to 72mm step-up ring lets you use a 72mm filter on a 67mm lens.
This is especially handy for ND, polarizer, or UV filters, which are often the most frequently used. Instead of maintaining a collection of filters for each lens size, you can standardize on a larger size and use step-up rings to fit them all.
Understanding Step-Up Ring Sizes
Step-up rings are labeled with two numbers: the smaller number is the lens thread (the side that screws onto the lens), and the larger number is the filter thread (the side that accepts the filter). For example, a 43 to 49mm step-up ring fits a 43mm lens and allows you to use a 49mm filter.
Common sizes range from 43mm to 82mm, and a step-up ring set can cover many combinations. When choosing a ring, always check your lens's filter thread diameter (usually marked on the lens cap or barrel) and the filter size you want to use.
Limitations and Trade-Offs
Step-up rings are not a perfect solution. The main limitation is vignetting: because the filter is larger than the lens thread, the ring extends outward, and at wide focal lengths or with thick filters, the ring's edges can appear in the corners of your photos.
Another issue is that a step-up ring adds height, which can block the use of certain lens hoods or make it harder to attach a lens cap. Also, if you use a polarizer, you may need to adjust the filter after mounting, and the extra ring can make that more difficult.
Finally, step-up rings only work in one direction: you cannot use a smaller filter on a larger lens. For that, you'd need a step-down ring, which often causes vignetting and is generally not recommended.
How to Use a Step-Up Ring
- Check Your Lens Thread: Look at the front of your lens or the lens cap for the filter thread diameter (e.g., 67mm). This is the smaller number on the step-up ring. Make sure you have the correct lens thread before ordering.
- Choose the Right Step-Up Ring: Select a ring that matches your lens thread (smaller) and the filter size you want to use (larger). For example, if your lens is 67mm and your filter is 72mm, choose a 67 to 72mm ring. If you have multiple lenses, consider a step-up ring set to cover several sizes.
- Attach the Ring to the Lens: Screw the ring onto the lens thread until it is snug, but do not overtighten. Check that it is aligned properly to avoid cross-threading. Use gentle pressure; overtightening can damage the threads.
- Mount the Filter: Screw your filter onto the ring's larger thread. Ensure it is secure but not overly tight. If you're using a polarizer, rotate it after mounting to adjust the effect.
- Check for Vignetting: Take a test shot at your widest focal length and smallest aperture. If you see dark corners, you may need to zoom in slightly or use a thinner filter. Vignetting is more likely with wide-angle lenses and thick filter frames.
Recommended Step-Up Rings
- Step Up Ring Set 9-teilig – Filteradapter von 43 bis 82 mm: The Lens-Aid Step Up Ring Set includes 9 adapters covering sizes from 43 to 82 mm, made from CNC-machined aluminum. A set gives you flexibility to adapt filters across multiple lenses without buying individual rings for each size.
Step Up Ring Set 9-teilig – Filteradapter von 43 bis 82 mm - Step Up Ring 67 auf 72 mm – Filteradapter aus Aluminium: This 67 to 72mm step-up ring lets you use 72mm filters on a 67mm lens thread. It's a common size for standard zoom lenses, allowing you to share filters between lenses with different thread sizes.
Step Up Ring 67 auf 72 mm – Filteradapter aus Aluminium - Step Up Ring 43 auf 49 mm – Filteradapter aus Aluminium: The 43 to 49mm step-up ring allows you to mount 49mm filters on a 43mm lens thread. This is useful for compact or vintage lenses where 49mm filters are more common and easier to find.
Now that you know the basics of step-up rings, you can start sharing filters across your lenses. Measure your lens thread, pick the right ring or set, and enjoy the savings and convenience.
