---
product_id: 420256985
title: "MK-EFTR-B"
brand: "meike"
price: "R$1376"
currency: BRL
in_stock: null
reviews_count: 8
category: "Meike"
url: https://www.desertcart.com.br/products/420256985-mk-eftr-b
store_origin: BR
region: Brazil
---

# Auto Focus & Stabilization Customizable Control Ring Dust & Water Resistant Seal MK-EFTR-B

**Brand:** meike
**Price:** R$1376
**Availability:** ❌ Out of Stock

## Summary

> 📸 Elevate your Canon RF rig with pro-grade lens control and unbeatable value!

## Quick Answers

- **What is this?** MK-EFTR-B by meike
- **How much does it cost?** R$1376 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/420256985-mk-eftr-b)

## Best For

- meike enthusiasts

## Why This Product

- Trusted meike brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Control Ring Customization:** Assign shutter speed, aperture, ISO, or exposure compensation for intuitive manual control.
- • **Seamless EF/EF-S to RF Compatibility:** Unlock your full Canon lens arsenal on EOS R series cameras without compromise.
- • **Rugged Metal Build for Pro Durability:** Premium metal mounts ensure rock-solid lens connection and long-lasting performance.
- • **Reliable Autofocus & Image Stabilization:** Experience fast, accurate AF and smooth optical stabilization for every shot.
- • **Enhanced Dustproof & Waterproof Protection:** Rubber-sealed rear mount guards your gear against environmental hazards.

## Overview

The Meike MK-EFTR-B adapter empowers Canon EOS R series users to effortlessly mount EF/EF-S lenses with full autofocus, image stabilization, and EXIF data transmission. Featuring a customizable control ring for quick manual adjustments, rugged metal construction, and enhanced dust and water resistance, this adapter delivers professional-grade performance at a fraction of the cost of official Canon alternatives.

## Description

desertcart.com : Meike MK-EFTR-B for Canon EF/EF-S Lens to RF Mount Cameras Auto-Focus Lens Adapter with Control Ring for Canon EF/EF-S Lenses to Canon EOS R RP R5 R6 R7 R10 C70 : Electronics

Review: Great adapter for half the price! - I am not familiar with the autofocus performance of the Canon RF-EF adapter with the control ring, but this adapter is perfectly fast and has performed very well every time I have used it. The lens I use the adapter with is the Canon EF 70-200mm f/4 IS USM and it works perfectly. I am also a huge fan of the control ring. I would recommend this adapter to anyone who is on a budget and uses the control ring. It adapts well to my Canon EOS R and is half the price of the Canon control ring adapter.
Review: Works just like Canon adapter at 1/3 the price. - For the price can't complain at all. Works with all my EF-S lenses. Only negative is trying to update firmware is hard with the language barrier. The included firmware works with my current collection of lenses so I should be ok. I planned on buying this as a short term thing to use until I bought the Canon model at a later time. This is nice enough that I might just a second Meike adapter as a backup and save the money.

## Features

- 【Compatibility】The adapter is designed to allow EF / EF-S lenses to be used with EOS R RP R5 R6 camera.
- 【Control Ring】Can be assigned the functions that are commonly used with cameras, such as shutter speed, aperture setting, ISO sensitivity and exposure compensation.
- 【Functions】It enables Auto Focusing, Image stabilizing, EXIF signal transmission and other functions of the lens.
- 【Metal construction】 Metal material on front and rear mounts can provide rugged flexibility
- 【Dustproof and Waterproof 】The rear mount on the adapter with a rubber ring to improve dustproof and waterproof performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09QYCV8F8 |
| Best Sellers Rank | #133 in Camera Lens Adapters & Converters #418 in Camera Lenses |
| Brand | Meike |
| Camera Lens | Meike EF/EF-S Lens to RF Mount Camera Adapter with Control Ring |
| Camera Lens Description | Meike EF/EF-S Lens to RF Mount Camera Adapter with Control Ring |
| Compatible Camera Models | Canon EF series |
| Compatible Camera Mount | Canon EOS |
| Compatible Mountings | Canon EOS |
| Customer Reviews | 4.3 out of 5 stars 203 Reviews |
| Exposure Control Type | Automatic |
| Focal Length Description | 1 millimeters |
| Focus Type | Auto Focus |
| Global Trade Identification Number | 06955523704659 |
| Image stabilization | Optical |
| Lens | Standard |
| Lens Coating Description | Super Integrated Coating |
| Lens Design | Prime |
| Lens Fixed Focal Length | 85 Millimeters |
| Lens Mount | Canon EF |
| Lens Type | Standard |
| Manufacturer | Meike |
| Maximum Aperture | 2.8 Millimeters |
| Media Type | ProductImage |
| Minimum Focal Length | 1 Millimeters |
| Model Name | MK-EFTR-B |
| Number of Diaphragm Blades | 6 |
| Real Angle Of View | 20.16 arcmin |
| Water Resistance Level | Not Water Resistant |
| Zoom Ratio | 1x |

## Product Details

- **Brand:** Meike
- **Camera Lens Description:** Meike EF/EF-S Lens to RF Mount Camera Adapter with Control Ring
- **Compatible Mountings:** Canon EOS
- **Focal Length Description:** 1 millimeters
- **Lens Type:** Standard

## Images

![MK-EFTR-B - Image 1](https://m.media-amazon.com/images/I/61nogFFKoFL.jpg)

## Questions & Answers

**Q: I found firmware but i dont know how to upload it to the adapter.when i connect it to pc via usb nothing happens. anybody knows how to do it?**
A: I have the EXACT same question.  Gotta love no instructions.

**Q: Where are the firmware files found?**
A: Hello,
Please click "Download and support" at the bottom of HongKong Meike official website to find the firmware. If you can't find it, please contact the seller.

**Q: Does control ring works on Sigma lenses on canon rp ?**
A: It should. I worked with a Sigma lens on my R7 perfectly we'll.

**Q: How to update via usb?  connect and then what? there are no instructions or application to install**
A: It is not easy, you have to get the program from Meike’s website and it is not in English so you have to just click through and pray it works. I only did it to stop the battery drain problem.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great adapter for half the price!
*by T***Y on August 1, 2022*

I am not familiar with the autofocus performance of the Canon RF-EF adapter with the control ring, but this adapter is perfectly fast and has performed very well every time I have used it. The lens I use the adapter with is the Canon EF 70-200mm f/4 IS USM and it works perfectly. I am also a huge fan of the control ring. I would recommend this adapter to anyone who is on a budget and uses the control ring. It adapts well to my Canon EOS R and is half the price of the Canon control ring adapter.

### ⭐⭐⭐⭐⭐ Works just like Canon adapter at 1/3 the price.
*by J***O on April 12, 2024*

For the price can't complain at all. Works with all my EF-S lenses. Only negative is trying to update firmware is hard with the language barrier. The included firmware works with my current collection of lenses so I should be ok. I planned on buying this as a short term thing to use until I bought the Canon model at a later time. This is nice enough that I might just a second Meike adapter as a backup and save the money.

### ⭐⭐⭐⭐ A nice alternative to the Canon brand
*by L***R on August 6, 2024*

This isn't the best-made adapter, but it works well and comes with the addition of a ring to enable different features on the camera (aperture, focus). And I haven't had any issues with it not communicating with my Canon EOS lenses and the the Canon R camera. Plus, the price is very attractive.

## Frequently Bought Together

- Meike MK-EFTR-B for Canon EF/EF-S Lens to RF Mount Cameras Auto-Focus Lens Adapter with Control Ring for Canon EF/EF-S Lenses to Canon EOS R RP R5 R6 R7 R10 C70
- Meike 85mm F1.8 Full Frame Auto Focus Medium-Telephoto Portrait Lens Compatible with Canon EOS EF Mount Digital SLR Cameras 5D Mark IV 6D Mark II
- SanDisk 128GB Extreme PRO SDXC UHS-I Memory Card - C10, U3, V30, 4K UHD, SD Card - SDSDXXD-128G-GN4IN

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**Shop now:** [https://www.desertcart.com.br/products/420256985-mk-eftr-b](https://www.desertcart.com.br/products/420256985-mk-eftr-b)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-09*