The Sensei PRO 46-52mm Aluminum Step-Up Ringpermits the use of 52mm threaded filters on lenses with 46mm filter threads. It has large side knurls to provide a more textured grip when mounting or removing it from a lens. This step-up ring features a lightweight aluminum alloy construction with a corrosion-resistant, matte black, hard-anodized finish for durability and to minimize reflections.

Use 52mm Filters on 46mm Lens    Knurled Sides for Firmer Grip    Matte Black Finish Minimizes Reflections    Corrosion-Resistant Hard Anodized Finish

Related Questions and Answers

Q: 1. What is the tread pitch of the filter?

A: The Sensei 86-95mm Aluminum Step-Up Ring has a 1.0mm thread pitch.

Q: 2. Am planning to do these 1. step up from 37-52mm and then 2. step up from 52-67mm 3. Mount a 67mm CPL filter Will I be introducing vignetting in this setup? Appreciate all comments. Thanks in advance.

A: Depends on the lens you're using. But its likely you wouldn't get any vignetting from the filter due to the filter being so much bigger than the lens diameter. A random suggestion I think would help to simplify the process, consider looking into this step up ring. It's from 37-67mm all in one. So you wouldn't need to stack step-ups. https://www.bhphotovideo.com/c/product/1355342-REG/benro_dr6737_67_37mm_step_down_ring.html?sts=pi&pim=Y

Q: 3. Where is it made?

A: This product is made in China.

Q: 4. Can I purchase a 72mm filter and use that one filter on both a 72mm lens and a 46mm lens with the 46-72mm step-up ring?

A: Yes, that's exactly what it's for.

Q: 5. What is the thread pitch for both size?

A: The thread pitch is 0.75mm.

Q: 6. Will the Sensei step up rings work for freewell magnetic filters?

A: Since the ring is aluminum, it is not magnetic. The Freewell Empty Magnetic Base Ring (82mm) would still be needed in order to attach their other magnetic filters. https://bhpho.to/3hEadRN

Q: 7. What is the thread pitch for the 39mm side of the Sensei PRO 39-52mm Aluminum Step-Up Ring?

A: 0.75mm

Q: 8. Can you stack these? I have a 58-77 but I want to convert it to an 82mm. Can I buy a 77mm to 82mm and stack it with the 58mm to 77mm?

A: You can do that, but vignetting is possible on a wide-angle lens--this 58-82mm adapter ring is a better idea: https://www.bhphotovideo.com/c/product/1443406-REG/sensei_surpa_5882_pro_58_82mm_step_up_ring.html

Q: 9. Can this be used in a 114 Matte Box? Hypothetically want to take a Sigma Art Lens and used a Bright Tangerine Mistfit Atom.

A: The Sensei 72-95mm Aluminum Step-Up Ring allows you to connect a lens with a 72mm front thread to a 95mm thread adapter ring. Unfortunately, you cannot replace the adapter ring for the matte boxes with a step-up ring because they are designed as a proprietary system.

Q: 10. Where is this made?

A: This item is manufactured in China.