The Sensei PRO 37-46mm Aluminum Step-Up Ring permits the use of 46mm threaded filters on lenses with 37mm 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 46mm Filters on 37mm Lens    Knurled Sides for Firmer Grip    Matte Black Finish Minimizes Reflections    Corrosion-Resistant Hard Anodized Finish

Related Questions and Answers

Q: 1. 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: 2. Can anyone tell me the outer diameter of the 77mm step up ring(s) ? I'm interested to know if I can use a 80mm push on cap over it.

A: The OD is probably 79 or 80mm. You will have to try it with your cap, This is never an exact science due to the fact that dimensions are never precise from cap to cap and ring to ring.

Q: 3. What is the thread pitch for both size?

A: The thread pitch is 0.75mm.

Q: 4. Could this cause vignetting on a 15mm wide angle lens?

A: While it would depend on the lens and filter you are using to say for sure, since this is a step-up ring and even wider, it is unlikely that it would cause any vignetting.

Q: 5. Any issues using this Step-Up ring with a PolarPro 82mm Peter McKinnon Signature Edition II Variable ND 1.8 to 2.7 Filter?

A: Yes, the Sensei PRO 58-82mm Brass Step-Up Ring will work with the PolarPro 82mm Peter McKinnon Signature Edition II Variable ND 0.6 to 1.5 Filter (2 to 5-Stop).

Q: 6. Will this fit a Fuji X30?

A: No, the Sensei PRO 40.5-52mm Aluminum Step-Up Ring will not fit the front thread of the Fujinon X30 camera because the front thread of the non interchangeable X30 lens is an unusual 40mm, not 40.5mm. The FUJIFILM X20 Lens Hood and Filter Set for X10, X20, or X30 Camera: https://bhpho.to/2WTA0sh features a step up ring 40mm to 52mm. It is the only step up ring that will fit the front thread of the Fujinon X30 lens.

Q: 7. Does this come in a protective plastic case that you can use to store it?

A: I'm sorry, no.

Q: 8. Where are Sensei step up rings made?

A: The country of origin is China.

Q: 9. What is the thread pitch for the 39mm side of the Sensei PRO 39-52mm Aluminum Step-Up Ring?

A: 0.75mm

Q: 10. Will the 39mm end of adapter fit a Leica lens?

A: The Sensei PRO 39-49mm Aluminum Step-Up Ring will fit on any lens that has a 39mm filter thread. 39mm is a common filter thread size for many Leica lenses.