EF-RF Drop-In Filter Adapters

[jlg84]

When I got my first Canon mirrorless camera in 2020, the vendor very kindly threw in the EF-RF Drop-In Filter adapter as an incentive. Since I have a lot of EF glass, that adapter was on my camera close to 100% of the time, and I used it with the supplied CPL filter as well as a bunch of ND filters and a clear filter that I got from Breakthrough Photography.

The camera was recently stolen, along with the adapter and a 100-400mm lens, so I am now faced with replacing it. Living as I do in New Zealand, the price of the Canon adapter is absurdly high, so I was wondering if any of the third-party options are worth considering. Does anyone have any experience with them, especially the Kolari one, which I see I can get with a clear filter (which is the one that was in the adapter when it was taken, so I don't really need a new CPL filter)?

 

[Sittatunga]

When I got my first Canon mirrorless camera in 2020, the vendor very kindly threw in the EF-RF Drop-In Filter adapter as an incentive. Since I have a lot of EF glass, that adapter was on my camera close to 100% of the time, and I used it with the supplied CPL filter as well as a bunch of ND filters and a clear filter that I got from Breakthrough Photography.

The camera was recently stolen, along with the adapter and a 100-400mm lens, so I am now faced with replacing it. Living as I do in New Zealand, the price of the Canon adapter is absurdly high, so I was wondering if any of the third-party options are worth considering. Does anyone have any experience with them, especially the Kolari one, which I see I can get with a clear filter (which is the one that was in the adapter when it was taken, so I don't really need a new CPL filter)?

I have the Kolari which as a kit with the clear, VND and polarising filter was half the price of of the Canon kit even after transatlantic shipping from California, import duty, VAT and the carrier's fee for paying these. It's beautifully finished, works like a charm, the filters are fine even with a TS-E lens at full shift. It does, however, crash both my original R and my R8 if I remove an EF lens from it while it's mounted on the camera, which is a nuisance as I'd got into the habit of using my R as an EF mount camera for a couple of years before I bought my first RF lens. I don't know if one of the lens side pins is out of alignment, causing a short circuit in the process of taking the lens off (they look ok, I hope it's not the circuitry) but I couldn't face the hassle of shipping it back to Kolari for a replacement. That's something to check if you can do inside a shop. Kolari have a much bigger range of filters for it than Canon do.

I also have a cheap and nasty YKEASU adapter that I bought very cheaply from a charity shop. It came with an uncoated polarising filter in a cheap plastic rotating holder but takes the Kolari filters, holds the lens firmly in the right place and doesn't crash the camera when removing an EF lens. I can see a lot of exposed circuitry in the filter slot though, that is properly blanked off in the Kolari holder. (The filter slots of all these adapters extend below the lens contacts.)

 

[Phill L]

Unfortunately, when I tested a Kolari adapter I too experienced the camera crashing on both my R5II and R7. So it went back to the supplier. This seems a common issue with third party EF-RF adapters.

 

[BlueBomberTurbo]

I've got the Meike version. Works fine on my R50V with the 50/1.8 STM and Tamron 17-50/2.8 VC.