The B+W 46-49mm Step-Up Ring permits the use of 49mm threaded filters on lenses with 46mm filter threads. It features a lightweight, aluminum-alloy construction that has a corrosion-resistant, black anodized finish for durability. This step-up ring has side knurling to provide a more textured grip when mounting or removing it from a lens.

Use 49mm Filters on 46mm Lens    Knurled Sides for Firmer Grip    Anodized Aluminum Construction

Related Questions and Answers

Q: 1. Will thisgive me a vignet if i use it on a sony 16-35mm lens and an 82mm polarizing filter?

A: I dont think so. As somebody said the sensor size could play a role, although it never happened to me.

Q: 2. What is the thread pitch on this step-up ring?

A: Unfortunately we do not have the measurement of the pitch to provide you with. I contacted the manufacturer and they stated it is within the common pitch of your major brand filters we carry (Hoya, Tiffen, B+W etc).

Q: 3. Is the black color with matte finish inside?

A: Yes, the black color and finish covers the entire step up ring.

Q: 4. The description says it's aluminum, but the reviews say it's brass - which is it?

A: Aluminum, without a doubt. I have brass step up rings as well, they are substantially heavier than this ring.Let that not reflect poorly on the craftsmanship however; it is still a superbly machined piece of metal with precise fit and finish.

Q: 5. Can this be used with filters that aren't B+W brand? Such as Firecrest?

A: I've used these step up rings with various filter brands ... Hoya, Nikon, etc...

Q: 6. Will this adapter fit the Canon SX50? I want a metal adapter, the plastic one I used for a VERY SHORT TIME split. If not this one, can you recommend one? Thank you.

A: No, that is a step up ring. The built in lens on the SX50 does not have filter threads and can only use the filter adapter made for it. The link for that is, http://bhpho.to/1brgUcX.

Q: 7. When using this adapter, with a 77mm nd filter on a 58mm cap size lens, will it have any downsides? Or is it gonna look perfect just like a 58mm filter?

A: When using the B+W 58-77mm Step-Up Ring, photos should look fine using the 58mm cap size, unless one is using a fisheye wide angle lens.

Q: 8. Greetings! Is this the .5 fine thread or the standard .75 thread? I wish to use on a Polaroid 180 and don't want to trash the threads.Thanks!

A: The Heliopan 46-49mm Step-Up Ring uses standard threads, and are excellent quality step-up rings with brass construction.

Q: 9. is this for general lenses? i have a canon 50mm (nifty fifty) will this work on it?

A: The Canon EF 50mm f/1.8 has a 49mm filter threading. This is adapter allows you to put a 62mm filter on a lens with a 49mm thread. It will work with the Canon 50mm F/1.8, B&H # CA5018EFSTM.

Q: 10. Exactly what does this weigh?

A: Not a lot