Meike MK-RF-AF1 13mm + 18mm Metal AF Full Frame Macro Extension Tube Adapter Ring Kit for EOS-R Series Cameras RF Mount Cameras EOS-R EOS-RP

They fit without jamming and snap in with ease. Just a bit of slop when locked in. I had one issue where I didn't click together far enough, but now I double check and issue free. The lock/release is a bit small but functional. Overall, they work and are a good value. (EOS R and a bunch of RF lenses) - Update: Still working just fine. But, the caps don't stay on in storage. There are no clicks or stops to keep them attached.

I tried out these tubes on an old EF 50mm and it magnifies nicely. There is a bit of a learning curve with macro photography because of the very small field of focus but that's half the fun.

I used the Meike MK-RF-AF1 13mm + 18mm Extension Tube Kit on a Canon R6 with the RF 24-70mm f/2.8, and the results met expectations for macro work. The tubes preserve full electronic communication, including AF and aperture control, which is a big win. The combo performed beautifully for close-up flower photography, letting me get surprisingly close while maintaining sharpness and control.Build quality is solid—metal mounts feel durable and snug. However, the 11mm tube has a sticky release latch, particularly when mounted to lenses like the RF 50mm f/1.2 and 24-70mm f/2.8. It takes some finesse (and patience) to detach, which could be frustrating in fast-paced shooting environments, and downright nerve racking when you have a $25 tube stuck to a $1600 lens.Overall, it’s a good value option for anyone exploring macro work with RF glass.

I wanted a fully functional extension tube ring set for my RF cameras, and this popped up on my "suggestions". First to note, there are only two rings. Other sets for my full frame EOS cameras had 3 rings. These rings, like other inexpensive brands in past purchases, are lower in price than the camera manufacturer and higher end brands. When I received them, they were excellent build quality and they work. No just juggling just right for the rings, and for the planets to align just right - they consistently work. I will be buying a second set soon.

Work very well on RF lens

The rings work well if you get a good copy. The first time I ordered them they were quite lose. The second one worked ok, despite still being a bit lose. However, overall they work. Nevertheless, you may want to think about if you should not buy a macro lense in the first place.If you exclusively shoot macro, I would not go for Canon but OM-system. It is much easier to use due to the weight and their 60mm is outstanding even with the OM-5

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I purchased the Macro Extension Tube for my son, who is working on his High School Digital Art portfolio. He wanted to experiment with close-up photography and this product seemed like a cheap and effective way to do so. I am happy to report that it has exceeded our expectations! The Macro Extension Tube was very easy to attach to our Canon EOS R camera and it works perfectly. The images my son has taken with it are stunning and have added a new level of detail and creativity to his portfolio. I highly recommend the Macro Extension Tube for anyone looking to try out macro photography, especially those working with the Canon EOS R system.