We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black Canon EF-EOS R drop-in filter adapter with circular polarizer, metal mounts, dust- and water-resistant, 0.64 kg

Canon

Canon Mount Adapter EF-EOS R Drop-In Circular Polarizer A 3442C002

SKU CH-5G5E-2F40B

A Canon EF to RF mount adapter with a built-in drop-in circular polariser and weather-sealed metal construction

  • PartLens Adapters & Rings
  • TypeLenses Accessories
  • ColorBlack
  • CompatibilityCanon EOS
  • SpecificationsMetal mount on both Lens and camera sides provides rugged fl
  • FeaturesDust- and water-resistant
  • Use drop-in filters without front-thread attachment
  • Compatible with Canon EOS R system cameras
  • Metal mounts on both sides for durability
  • Dust- and water-resistant construction for tough conditions
  • Weighs 0.64 kg for lightweight portability

Drop-In Filter Adapter for Canon EOS R

This Canon Mount Adapter EF-EOS R adds a drop-in filter slot so you can use circular polarizers or variable ND filters without threading them onto each lens. It is built for photographers who move between wide-angle and telephoto EF lenses on an RF-mount body and want a single filter position. The metal mounts on both sides give a rigid connection and the assembly is dust- and water-resistant.

Replaces front-thread filters

Instead of buying large-diameter filters for every EF lens, you insert one drop-in filter into the adapter and it works across the whole kit. The jump is worth it when you shoot wide angles with bulbous front elements that cannot take screw-in filters, or when you need to change polarization quickly without removing the lens. A clear filter is also available for protection-only use.

Simple bayonet fit with one alignment step

Mount the adapter to the RF body first, then attach the EF lens — the drop-in tray slides in from the side and locks with a click. The most common issue is forgetting to seat the filter tray fully, which can cause vignetting or light leaks at the edges. Keep the tray and contacts clean; dust on the filter surface shows up immediately in images.

Highlights

  • Use drop-in filters without front-thread attachment
  • Compatible with Canon EOS R system cameras
  • Metal mounts on both sides for durability
  • Dust- and water-resistant construction for tough conditions
  • Weighs 0.64 kg for lightweight portability

Specifications

BrandCanon
Model3442C002
PartLens Adapters & Rings
TypeLenses Accessories
ColorBlack
CompatibilityCanon EOS
SpecificationsMetal mount on both Lens and camera sides provides rugged flexibility
FeaturesDust- and water-resistant
Weight0.64

Questions about this item

Does the 3442C002 adapter need a specific lens-mount diameter to fit my EF lens?

The adapter has a metal EF mount on the lens side, so any Canon EF lens attaches directly without a step-up ring.

When fitting the drop-in circular polarizer, which orientation step do users most often miss?

The filter tray slides in from the side; the polarizer must sit with its rotation knob facing outward or the tray will not latch.

How often should the drop-in polarizer be removed for cleaning to maintain dust- and water-resistant sealing?

Remove the tray whenever dust or moisture is visible on the filter glass; the metal mounts and seals stay effective with occasional wiping.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.