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Sensei 40.5-37mm Step-Down Ring

BH #SESDR40.537 • MFR #SDR-40.537
280 reviews
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Sensei 40.5-37mm Step-Down Ring
Key Features
  • Use 37mm Filters on 40.5mm Lens
  • Aluminum Construction
  • Black Anodized Finish
The Sensei 40.5-37mm Step-Down Ring is a step-down ring permitting the use of 37mm threaded filters on a 40.5mm threaded lens. This black anodized aluminum ring provides a durable solution for using one size of filters with various-sized lenses.
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$3.55
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Sensei Step-Down Ring Overview

The Sensei 40.5-37mm Step-Down Ring is a step-down ring permitting the use of 37mm threaded filters on a 40.5mm threaded lens. This black anodized aluminum ring provides a durable solution for using one size of filters with various-sized lenses.

UPC: 847628537828

Sensei Step-Down Ring Specs

Compatible Lens
40.5 mm (Attaches via Filter Thread)
Compatible Filter
37 mm
Ring Material
Aluminum
Knurling
No
Packaging Info
Package Weight
0.02 lb
Box Dimensions (LxWxH)
3.45 x 2 x 0.35"

Sensei Step-Down Ring Reviews

Perfect and a great price

By David
Rated 5 out of 5
Date: 2026-03-30

It works great, well made and does what it should.

Works, But Causes Some Vignetting, As Expected

By Mike
Rated 4 out of 5
Date: 2025-11-12

Using With A Sony 24-70 Zoom And, As I Expected, Results In Some Vignetting.

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