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Sensei PRO 49-48mm Aluminum Step-Down Ring

BH #SESDRP4948 • MFR #SDRPA-4948
79 reviews
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Sensei PRO 49-48mm Aluminum Step-Down Ring
Key Features
  • Use 48mm Filters on 49mm Lens
  • Knurled Sides for Firmer Grip
  • Matte Black Finish Minimizes Reflections
  • Corrosion-Resistant Hard-Anodized Finish
The PRO 49-48mm Aluminum Step-Down Ring from Sensei permits the use of 48mm threaded filters on lenses with 49mm filter threads. It has large side knurls to provide a more textured grip when mounting or removing it from a lens. This step-down ring features a lightweight aluminum alloy construction with a corrosion-resistant, matte black, hard-anodized finish for durability and minimizing reflections.
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Sensei PRO Aluminum Step-Down Ring Overview

The PRO 49-48mm Aluminum Step-Down Ring from Sensei permits the use of 48mm threaded filters on lenses with 49mm filter threads. It has large side knurls to provide a more textured grip when mounting or removing it from a lens. This step-down ring features a lightweight aluminum alloy construction with a corrosion-resistant, matte black, hard-anodized finish for durability and minimizing reflections.

UPC: 847628036598

Sensei PRO Aluminum Step-Down Ring Specs

Compatible Lens
49 mm (Attaches via Filter Thread)
Compatible Filter
48 mm
Ring Material
Aluminum
Knurling
Side
Packaging Info
Package Weight
0.11 lb
Box Dimensions (LxWxH)
4.5 x 3.8 x 0.9"

Sensei PRO Aluminum Step-Down Ring Reviews

Disappointed

By Ron
Rated 3 out of 5
Date: 2026-01-02

B&H usually has quick shipping but this took over a week. I can understand with the holidays but it is a ring in a box that could have gone 1st class mail, but no, they put it in a 10"x8"x6" box and it took forever and its the wrong size so returning it is stupid.

Excellent

By Kyle
Rated 5 out of 5
Date: 2025-08-14

Fit perfect and very sturdy. Highly recommended

See any errors on this page?

Any vignetting? I would be using 37mm macro ...

Any vignetting? I would be using 37mm macro filters on 46mm lenses. Thanks!
Asked by: David
Regarding the Sensei PRO 46-37mm Aluminum Step-Down Ring, yes, using 37mm on a lens with a 46mm diameter may cause vignetting.
Answered by: Elliot
Date published: 2023-12-10

Is the description backwards? This looks like it ...

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?
Asked by: Adrian
this is a step-down ring. If you have a 72MM filter you can use that on a 67MM lens. Most of the time your lenses are all different sizes. If you buy the biggest filter you can use them on there lenses with a step-down ring.
Answered by: John
Date published: 2026-04-15

What is the difference between this one and ...

What is the difference between this one and SESDR7767 which is the same brand but doesn’t have “pro” in the name?
Asked by: Steve
The Pro has knurled edges for a better grip and corrosion resistant aluminum alloy.
Answered by: Rob
Date published: 2020-07-24

What is the height protrusion of the ring above ...

What is the height protrusion of the ring above the lens?
Asked by: Nicole
Sensei PRO 72-67mm Aluminum Step-Down Ring is 3.5mm tall above the threads.
Answered by: Llinelva D
Date published: 2023-11-28

question

I have a Canon 24-70mm ef L lens f.2.8 uses 82mm filter. I want to step down to myCanon 24-105mm ef L lens with 77mm filter will this step down ring work?
Asked by: MARY ELIZABETH E.
M.E., This ring is employed to use a LARGER filter (82mm) on a lens that usually takes a SMALLER filter (77mm). It should work perfectly well. IF one were to do things in the opposite direction (smaller filter on larger lens) then vignetting occurs, which is cutting off the corners of the image and should be avoided. Hope this helps. Lee
Answered by: LeRoy O.
Date published: 2020-01-09
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