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Review: JJC EF-RF Lens Mount Adapter

Overview : The JJC CA-EF_RF Lens Mount Adapter allows you to attach any Canon EF/EF-S mount lens to the Canon RF mount camera body. It gives you the ability to use your primary lens and saves you the cost of purchasing new lenses. This Lens Mount Adapter retains full autofocus and image stabilization capabilities and contains no optical components, thus maintaining the original optical quality of the mounted lens. Its durable aluminum alloy construction provides a secure and solid camera-to-lens connection. The non-glare matte finish on the inside prevents reflections. Moreover, the tripod foot is removable and it comes with a 1/4"-20 tripod socket at the bottom.

Features :
  • For attaching any Canon EF/EF-S mount lens to the Canon RF mount camera body
  • Contains no optical components
  • Maintains the original optical quality of the mounted lens
  • Retains full autofocus and image stabilization capabilities
  • Made of durable aluminum alloy and premium brass
  • Non-glare matte finish on the inside prevents reflections
  • Removable tripod foot comes with a 1/4"-20 tripod socket at the bottom

Quality/Usability : With the release of the Canon R5 and R6, trying to find a basic lens mount adapter or the control ring mount adapter from AmazonB&H PhotoAdorama or Canon's online store is impossible to find unless you're willing to pay eBay's price gouged pricing.

More and more 3rd party accessories manufacturers are releasing their own. One of them happen to be popular JJC. They are known for lens hoods, caps and many other accessories. I thought I would give them a try to see how theirs stacks up against Canon's own adapter.

When you receive the JJC EF-RF Lens Mount Adapter, there isn't really much to it. Included is the mount adapter with dust caps, a pamphlet and a carry bag.

Canon adapters come in a nice padded case similar to their speedlite flashes.

The JJC adapter is made of aluminum allow and premium bass. So it definitely doesn't have the cheap plastic feel. Even though JJC claims it is a non-glare matte finish, it still has a bit of gloss or shine to it.

What the JJC does have that the Canon adapters don't is a tripod foot with a 1/4-20" socket on the bottom. This is a nice addition if you're hauling heavy lenses and don't want to put all the strain on the bottom of the camera but want to even out the weight distribution. If you don't want the tripod food, it can be easily removed by unscrewing the two Philips screws.

I do wish that the adapter had more of a matte finish to resemble close to the OEM Canon or camera body.

On the body of the JJC mount adapter, you have indicators on where to line up the lenses. On the side, you also have a release switch to detach lenses from the lens mount. Placement and markings match up to Canon's.

I wish JJC could have done a little better with their decision placing the indicators. JJC has theirs printed all in white and on the body of the adapter where as Canon has it marked off on the bayonet of their adapters which you'll see in the below images. It's not a big deal if its on the body of the camera but it would of been nice if they mimic Canon's with the red. It just would of made things a little easier to see when mounting the lens or the adapter to the camera body. This is easily fixable with either a red Sharpie market or red nail polish.

Pictured above is the JJC mount adapter on the left and the Canon control ring mount adapter on the right for comparison.

The JJC mount adapter has the same amount of pin connections as Canon's adapter. The interior shape is a bit different where the JJC is a bit more rounder whereas the Canon is more rectangular. I'm not sure if there is a reason why one over the other or it could be a manufacturing decision to keep costs down or something but it did not affect the image or compatibility.

I don't have the basic adapter but the control ring adapter is just a bit wider than the JJC. One thing that I wish JJC did include was a rubber seal where the adapter meets with the camera body. The control ring adapter has a rubber gasket around it to weather seal the adapter to the lens.

The lens mounted nicely to my R6. I had no problems getting it on and off. The adapter didn't have any play between the mount adapter, camera body or lens. The EF 85mm f1.2L II fit nicely onto the adapter.

I also attached an older EF 16-35mm f2.8L and the EF 70-200mm f2.8L IS III and those fit nicely as well. Even with the heavy lens, it didn't feel like the adapter was going to break or cause any damage to the lens or camera.

But most importantly, how is the auto focus?! I must worked flawlessly without issue. The AF was quick and snappy just like the higher priced Canon adapters.

Take a look at our unboxing, overview and comparison video.

Conclusion : Overall, the JJC EF-RF Lens Mount Adapter works great, the auto focus is quick and snappy just like the OEM Canon adapters. I just wish it had a rubber gasket and the exterior finish to match Canon's adapter.

Otherwise for around $57, this is a great alternative or temporary solution for those in need of an EF-RF lens mount adapter but are having a hard time looking for the Canon version. And if you're heavily invested in EF lenses and don't have the money for the RF, this is also great to place onto each of your EF lenses instead of having to leave the mount adapter onto your camera and constantly switch out the lenses.

There are other 3rd party lens mount adapter. You can check out the list that we compiled here.

Manufacturer: JJC
Site: Buy from Amazon / Buy from eBay
 / Buy from AliExpress

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