---
product_id: 120014762
title: "Youtiankai Camera cm-AEF-MFT Reducer Booster Lens Adapter for Canon EF EOS Lens to Micro 4/3"
brand: "youtiankai"
price: "FREE"
currency: EUR
in_stock: false
category: "Photo"
url: https://www.desertcart.sk/products/120014762-youtiankai-camera-cm-aef-mft-reducer-booster-lens-adapter-canon
store_origin: SK
region: Slovakia
---

# Youtiankai Camera cm-AEF-MFT Reducer Booster Lens Adapter for Canon EF EOS Lens to Micro 4/3

**Brand:** youtiankai
**Price:** FREE
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Youtiankai Camera cm-AEF-MFT Reducer Booster Lens Adapter for Canon EF EOS Lens to Micro 4/3 by youtiankai
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/120014762-youtiankai-camera-cm-aef-mft-reducer-booster-lens-adapter-canon)

## Best For

- youtiankai enthusiasts

## Why This Product

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

## Description

CM-AEF-MFT Reducer Booster Lens Adapter for Canon EF EOS Lens to Micro 4/3 AF 0.71x for GH4 GH5 GF6 GF1 GX1 GX7 Description: 1. Lens Mount Adapter AEF-MFT Booster can change the EF lens over M4/3 Camera, and meanwhile can achieve functions like USB Firmware Upgrading; 2. 0.71x Focal Reducer Booster; EXIF Info. Transmitting; Support Auto Focus Function;  3. Electronic Aperture Control; Support Lens IS Stabilization Function; Gold-plated Contact Pins,etc. 4. It is satisfied all the photographer or video users who need this super combination Specification: Compatible Lens: EF Series Lens Compatible Camera: M4/3 Mount Camera Front installation: EF Series Lens Back installation: M4/3 Mount Camera Camera-mount outer diameter: 40mm/1.57&apos;&apos; Lens-mount outer diameter: 65mm/2.55&apos;&apos; Length: 74.5mm/2.93&apos;&apos; Net Weight: 140.5g Suitable for: GH4 GH5 GF6 GF1 GX1 GX7 E-M5 E-M10 E-PL5 Warm Tips: 1. Increase the Aperture,Increasing one gear of aperture to blur the background and better highlight the theme. CM-AEF-MFT Booster with high-quality will be a good choose for shutterbug. 2. Reduce Focal Length: This adapter built-in optical correction group, when using the adapter, the focus of the lens should be shorten by X0.71, and then multiply this data by M4/3 conversion rate, is approximately M4/3 camera&apos;s actually equivalent focus. For example, the 50mm focal length is mounted on M4/3 camera: 50mm (Original EF lens Focal Length) x0.71( EF-E Mount Adapter )x 2 (M4/3 Conversion Rate )=71mm Note:  Please allow slight size differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understand.Package included:1 x Booster for Canon EF Lens

## Features

- USB Firmware Upgrading.
- 0.71x Focal Reducer Booster.
- EXIF Info. Transmitting.
- Support Auto Focus Function.
- Electronic Aperture Control.

## Images

![Youtiankai Camera cm-AEF-MFT Reducer Booster Lens Adapter for Canon EF EOS Lens to Micro 4/3 - Image 1](https://images-na.ssl-images-amazon.com/images/I/51EuJH4ma2L.jpg)
![Youtiankai Camera cm-AEF-MFT Reducer Booster Lens Adapter for Canon EF EOS Lens to Micro 4/3 - Image 2](https://images-na.ssl-images-amazon.com/images/I/41Gjw467BhL.jpg)
![Youtiankai Camera cm-AEF-MFT Reducer Booster Lens Adapter for Canon EF EOS Lens to Micro 4/3 - Image 3](https://images-na.ssl-images-amazon.com/images/I/51b0n6KDMzL.jpg)
![Youtiankai Camera cm-AEF-MFT Reducer Booster Lens Adapter for Canon EF EOS Lens to Micro 4/3 - Image 4](https://images-na.ssl-images-amazon.com/images/I/51ba%2B4HHGoL.jpg)
![Youtiankai Camera cm-AEF-MFT Reducer Booster Lens Adapter for Canon EF EOS Lens to Micro 4/3 - Image 5](https://images-na.ssl-images-amazon.com/images/I/518MjY6yHqL.jpg)

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**Shop now:** [https://www.desertcart.sk/products/120014762-youtiankai-camera-cm-aef-mft-reducer-booster-lens-adapter-canon](https://www.desertcart.sk/products/120014762-youtiankai-camera-cm-aef-mft-reducer-booster-lens-adapter-canon)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-08*