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Canon Drop-In Filter Mount Adapter EF-EOS R with Circular Polarizer Filter

BH #CAMAEFRFDICP • MFR #3442C002
 58 reviews
Canon Drop-In Filter Mount Adapter EF-EOS R with Circular Polarizer Filter
Key Features
  • Canon EF/EF-S Lens to EOS R Camera
  • Maintains AF and Image Stabilization
  • Includes Drop-In Circular Polarizer A
  • Dust- and Water-Resistant
Extending the range of compatible lenses, this Canon Drop-In Filter Mount Adapter EF-EOS R is a unique lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. This sophisticated adapter affords compatibility with select A-type drop-in filters, and includes a circular polarizer filter to help increase saturation and contrast and reduce reflections.
In Stock
$299.00
$50/mo. suggested payments for 6 Mos.
with the credit card.§ 
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Add a protection plan from $35.99
Style
Standard
With Control Ring
With Drop-In Circular Polarizer Filter
With Drop-In Neutral Density Filter
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800.606.6969

Canon 3442C002 Overview

Extending the range of compatible lenses, this Canon Drop-In Filter Mount Adapter EF-EOS R is a unique lens adapter designed for attaching any EF or EF-S-mount lens to the EOS R mirrorless digital camera. This sophisticated adapter affords compatibility with select A-type drop-in filters, and includes a circular polarizer filter to help increase saturation and contrast and reduce reflections.

The adapter's design extends the ability to use filters with unique lenses that cannot accept filters on the front, and and it also retains full autofocus and image stabilization capabilities of the mounted lens. It is also dust- and water-resistant, making it suitable for use in harsh weather conditions.

UPC: 013803318005

Canon 3442C002 Specs

Adapter
Camera Mount
Canon RF
Lens Mount
Canon EF, Canon EF/EF-S
Physical
Dimensions
ø: 2.9 x H: 1.0" / ø: 73.2 x H: 24.7 mm
Weight
4.27 oz / 121 g
Packaging Info
Package Weight
0.65 lb
Box Dimensions (LxWxH)
5 x 5 x 5"

Canon 3442C002 Reviews

Great solution

By Paul
Rated 5 out of 5
Date: 2023-05-05

I bought drop-in CPL and VND filters from Breakthrough Filters and needed this adapter because the Breakthrough adapter isn't shipping yet. Works great!

Useful but..

By Rafael
Rated 4 out of 5
Date: 2022-08-16

The fact of having a CPL for all your lenses is great, but the position of the rotating wheel is a little weird, specially if you're using a telephoto (70-200 or 100-400 or so)

Simple and Functional

By Alice
Rated 5 out of 5
Date: 2022-05-16

I was a little curious as to how much I would like this adapter, using the standard L-series lenses on my new R5 C, but so far it is really a welcome addition to the kit. I have despised using Metabones adapters over the years, so that's where my apprehension came from. I'm not sure how well it works with Sigma, Rokinon, or other third-party manufacturers, but it is great with the Canon lenses. You really don't even know it is there. And, the circular polarizer works quite well, with the adjustment wheel easy to access, smooth to the touch. A welcome addition to the kit.

Canon EF-R mount ad CP filter

By Ray
Rated 5 out of 5
Date: 2022-02-07

I purchased this EOS EF-R adapter with the Drop-In CP filter primarily for use on my EOS R5 with my new IRIX 11mm f4 lens attached (since it has no front filter capability). However, even though I also have a Canon EOS EF-R mount adapter with control ring for my existing EF mount lenses, I like this super easy to use rear Drop-In CP filter design for all of my lenses, and not need to use my old front filter mount magnetic CP filters. The small rotation wheel with this adapter is super easy to use, much easier than a CP filter on the front of the lens. I also like that I can use my lenses with this CP filter still have my lens hoods attached. It's a bit expensive, but well worth it for me. Highly recommended.

Overpriced but very useful

By Michael
Rated 4 out of 5
Date: 2022-02-01

While this adapter is surprisingly expensive, the ability to use this filter with any EF lens and rotate the filter without reaching around to the front of the lens is nice.

huge expense for avg tool

By Dat
Rated 3 out of 5
Date: 2021-12-16

WAYYYYY too expensive. Not weather sealed. For R5 users, keep this in mind when shooting outdoors in wet weather. Your camera may be weather sealed, but this adapter negates that! Additional CLEAR drop-in filter REQUIRED in order to use without the PL filter. That's another $130! As for functionality, it works great. Communication between EF lens and camera is good. PL filter leaves a strange gradient at certain angles (?). Can't explain that. 3 stars because I wonder if 3rd party adapters WITH drop-in filters work just as good for about 1/3 or 1/4 of the cost??? I use this for business most of the time, so I want use native gear as much as I can afford. Canon's RF system is putting a dent in my wallet. To the point where I may not be able to afford native Canon gear anymore. May need to switch to 3rd party lens when they become available. For now, this adapter will save me money by using my EF glass.

Purchase Review

By Trudy
Rated 5 out of 5
Date: 2023-03-27

You can trust B&H for any of your photography needs/wants. This purchase was as I expected - just as described, is excellent quality, and it will serve me well for years to come. Thanks again for your continued excellent service!

Is mine defective?

By james
Rated 2 out of 5
Date: 2022-12-04

I learned photography on film so I was super excited to get an internal circular polarizer for digital! Maybe my memory is foggy but I don't remember these filters only covering half the image. At 100% effect, the effect only affects about half of the image. I'm trying to get rid of reflections in windows from between 30 and 40 degrees angle and while it does work to eliminate them, it only does it to half of the shot. Changing angles doesn't help. I even broke out my front loading CLP and it doesn't do this either. This was really expensive compared to that $12 filter and it seems to be defective.

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YOUR RECENTLY VIEWED ITEMS

Will this work with the RP

Will this work with the RP
Asked by: Joseph L.
Yes it will. This will work with the Canon EOS RP as well.
Answered by: Joseph
Date published: 2020-03-27

Is there a case for the drop-in filter when not ...

Is there a case for the drop-in filter when not in use?
Asked by: Daniel
The filter that comes with the adapter does not come with its own case.
Answered by: Rob
Date published: 2021-02-18

Once the polarizer or ND filter is removed do you ...

Once the polarizer or ND filter is removed do you have to put a clear filter in it's place is okay without a filter?
Asked by: alan
Yes, once you remove the polarizer or ND filter, you have to put a clear filter (BH #CADICFA • MFR #3444C001) in it's place.
Answered by: samikg
Date published: 2023-04-05

Will this work with full frame cameras, ...

Will this work with full frame cameras, specifically red v raptor?
Asked by: colton
The Canon Drop-In Filter Mount Adapter EF-EOS R with Circular Polarizer Filter is designed for Canon RF cameras with a full-frame (36x24mm) sensor. The sensor of the Red V-Raptor is 40.96x21mm, so it may not fully cover the sensor when shooting 8K.
Answered by: Boyd
Date published: 2022-09-12

The directions for the adapter say it has to be ...

The directions for the adapter say it has to be removed from the camera before I can change lenses. Why? It seems that it would be easier to leave the adapter on the camera and just change the lens attached to the adapter.
Asked by: Mary
We have all 3 adapters and 11 lenses and swap them out all the time without removing the lenses, never have had an issue,
Answered by: Thomas
Date published: 2021-08-27

Description says "water-resistant". How ...

Description says "water-resistant". How water-resistant is the dial that you turn to rotate the circular polarizer? Usable in rain?
Asked by: Magneto
Why in the heck would you think this would be good in the rain? There's not a possibility I would ever put this holder on in the rain. Yes it's good for misty conditions but not like prime lenses. I would not recommend using in rain or high moisture conditions.
Answered by: Bill
Date published: 2021-10-12

I am more concerning the image quality and ...

I am more concerning the image quality and autofocus speed when using polarizer filter. Does it degrade the image quality of the captured image? Does it slow down the autofocus speed at all?
Asked by: Rong
It works well , does not change the auto focus speed and does not degrade the image quality
Answered by: vilson
Date published: 2021-02-18

Is there a filter adapter for use with the RF ...

Is there a filter adapter for use with the RF lenses? Or does this allow both EF and RF lenses?
Asked by: Richard
No there is no RF to RF adapter
Answered by: vilson
Date published: 2021-02-09
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