Canon Drop-In Filter Mount Adapter EF-EOS R with Variable ND Filter

Vendor: Canon

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Canon Drop-In Filter Mount Adapter EF-EOS R with Variable ND Filter

Canon SKU: 3443C002AA | Helix SKU: CA3443C002

Connect an EF or EF-S lens to your EOS R camera using the Drop-in Filter Mount Adapter EF-EOS R, expanding your available lens options while also providing the ability to add a drop-in filter to your photographic endeavors. This drop-in filter adapter lets you utilize a variable ND filter, and because it's one size fits all, there's no need to purchase multiple filters to fit various lens diameters. The Drop-in Filter Mount Adapter EF-EOS R's matching design means smooth connections while a rugged, dust- and water-resistant construction adds to its flexibility, making it easy to have a choice of lens and filter for virtually any shooting situation.

  • Mount Adapter Allows EF/EF-S Lens Compatibility with the EOS R Camera.
  • Drop-in Filter Adapter Allows Use of a Variable ND Filter (from ND3 to ND500 - equivalent to 1.5 to 9 f-stops).*
  • Dust- and Water-resistant.
  • Exterior Design Matched to EF Lenses.
  • Metal Mount on Both Lens and Camera Sides Provide Rugged Flexibility.

Mount Specification

Canon EF mount (camera side)
Canon RF mount (lens side) 

Usable Lens

Canon EF lenses
Excludes RF lenses, EF-M lenses, CN-E lenses (EF cinema lenses) 

Usable Camera

Canon EOS R camera

Dust- & Water-resistance

Provided (rubber ring)


Φ2.88 x 0.97 in. / Φ73.2 x 24.7mm (adapter only)


Approx. 4.3 oz. / 121g (adapter only)


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