The Sensei PRO Aluminum Step-Up Ring 67-77mmpermits the use of 77mm threaded filters on lenses with 67mm 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 77mm Filters on 67mm Lens    Knurled Sides for Firmer Grip    Matte Black Finish Minimizes Reflections    Corrosion-Resistant Hard Anodized Finish

Related Questions and Answers

Q: 1. 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: 2. What is the thread pitch for the 39mm side of the Sensei PRO 39-52mm Aluminum Step-Up Ring?

A: 0.75mm

Q: 3. 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: 4. Is it made in japan?

A: This ring is made in China.

Q: 5. Is it more practical to buy a brass step up ring, or will an aluminum ring do the same thing at a lesser charge?

A: Both rings work well. The aluminum rings are softer and the brass rings are harder. More or less they do the same thing.

Q: 6. Looking at a couple of the step-up rings 77-95mm and 82-95mm, both by Sensei .Do you know the thickness (e.g. fore-to-aft dimension) of these rings?Thanks... Bill

A: They are about 5mm thick which is about the same as a standard UV filter ring.

Q: 7. What is the thread pitch for both size?

A: The thread pitch is 0.75mm.

Q: 8. 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: 9. 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: 10. Where is this made?

A: This item is manufactured in China.