Quick answer
Use a brass pro step up ring when you want to share filters across lenses with different thread sizes, avoiding duplicate purchases. The NiSi Brass Pro rings are a durable, jam-resistant choice for common size jumps like 40.5-46mm, 40.5-49mm, and 55-58mm.
Why brass instead of aluminium?
Brass pro step up rings are less likely to bind or jam on your lens threads compared to aluminium. The NiSi Brass Pro rings also include an anti-reflective interior treatment to reduce internal reflections, which is especially helpful when stacking filters.
What size jump works best?
A single step (e.g., 55-58mm) keeps the adapter slim and reduces the risk of vignetting, especially on wide-angle lenses. Larger jumps (e.g., 40.5-49mm) are convenient if you own multiple lenses with very different thread sizes, but they add more extension.
Frequently asked questions
When should I use a step up ring vs. buying a new filter?
Use a step up ring when you already own filters in a larger size and want to use them on a smaller lens thread. For example, if you have 46mm filters, a 40.5-46mm ring lets you use them on a 40.5mm lens without buying new filters. Check your existing filter collection before buying new ones—a step up ring may be cheaper.
Will a step up ring cause vignetting?
Possibly, especially with wide-angle lenses or when stacking multiple rings. A single slim step up ring (like 55-58mm) is less likely to cause vignetting than a larger jump or stacked rings. Test with your widest focal length before committing. Stick to one step up ring and avoid stacking for wide-angle lenses.
How do I choose the right size?
Match the inner thread to your lens and the outer thread to your filter. For instance, a 40.5-46mm ring screws onto a 40.5mm lens and accepts 46mm filters. Check your lens's filter thread diameter (usually marked on the lens barrel or in the manual). Always verify both lens thread and filter thread sizes before ordering.
Product details
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NiSi Brass Pro 40.5-46mm Step Up Ring: Durable brass alloy frame prevents jamming and binding. This means you can screw the ring on and off repeatedly without worrying about it getting stuck on your lens threads.
NiSi Brass Pro 40.5-46mm Step Up Ring
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NiSi Brass Pro 40.5-49mm Step Up Ring: Anti-reflective treatment on the inside of the frame to minimise reflections. Reduces unwanted flare and ghosting when using filters, maintaining image quality even with stacked filters.
NiSi Brass Pro 40.5-49mm Step Up Ring
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NiSi Brass Pro 55-58mm Step Up Ring: Knurled sides for easier grip. Makes installation and removal more secure, especially in cold or wet conditions where your fingers might slip.
