The Sensei PRO 52-67mm Aluminum Step-Up Ring permits the use of 67mm threaded filters on lenses with 52mm 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 67mm Filters on 52mm 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 difference between this one and SESDR7767 which is the same brand but doesn’t have “pro” in the name?

A: The Pro has knurled edges for a better grip and corrosion resistant aluminum alloy.

Q: 2. Will these work with the Lee holder 100mm ?

A: No, the Sensei Pro 67mm Adapter Ring for 100mm Aluminum Universal Filter Holder is not compatible for use with the LEE Filters LEE100 Filter Holder. Instead, the LEE Filters 67mm Wide-Angle Lens Adapter Ring for 100mm System Filter Holder, B&H # LEARWA67 would be the correct adapter ring designed for use with the LEE Filters LEE100 Filter Holder.

Q: 3. Where are Sensei step up rings made?

A: The country of origin is China.

Q: 4. What is the thread pitch for both size?

A: The thread pitch is 0.75mm.

Q: 5. IS this only compatible with freewell magnetic filters? or can it be used with other brands as well?

A: Guaranteed compatibility is only with Freewell magnetic filters unfortunately.

Q: 6. Could I use this step up ring to attach a 67 mm Cokin P series adapter ring on a 55 mm camera ?

A: Cokin P series has its own 55mm adapter ring. I will recommend using that option instead. The disadvantage of using step up ring with square filter holders is the probability of light leaking through the rings, besides this you can use the step up ring to connect Cokin P 67mm adapter ring.

Q: 7. Meant to ask about attaching Cokin 67 mm adapter on this step up ring to work on a 55 mm lens with the P Cokin Filter holder?

A: This ring can fit on a 55-67mm step ring in order to mount a Cokin P holder.

Q: 8. Is the description backwards? This looks like it allows one to use a 72mm filter on a 67mm lens. Why would you use a filter that is smaller than the lens?

A: The description is correct; a step-down ring allows you to use smaller filters on larger-diameter lenses. There are a few reasons as to why, for example, to save on the cost of buying filters again if you already own a lot of them in the smaller size. Also, if the lenses have a very narrow field-of-view, the visible vignette might not be significant and not influence the photo that much.

Q: 9. What is the height protrusion of the ring above the lens?

A: Sensei PRO 72-67mm Aluminum Step-Down Ring is 3.5mm tall above the threads.

Q: 10. 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