---
product_id: 64105334
title: "VILTROX EF-M2 II 0.71x Speed Booster Adapter MFT for EF mount Lens to Micro 4/3 Cameras GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-10 EM-5"
brand: "viltrox"
price: "€ 459.03"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.de/products/64105334-viltrox-ef-m2-ii-0-71x-speed-booster-adapter-mft
store_origin: DE
region: Germany
---

# 0.71x Focal Reducer USB Firmware Upgrade Auto Focus & Aperture VILTROX EF-M2 II 0.71x Speed Booster Adapter MFT for EF mount Lens to Micro 4/3 Cameras GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-10 EM-5

**Brand:** viltrox
**Price:** € 459.03
**Availability:** ✅ In Stock

## Summary

> 📸 Elevate Your Photography Game!

## Quick Answers

- **What is this?** VILTROX EF-M2 II 0.71x Speed Booster Adapter MFT for EF mount Lens to Micro 4/3 Cameras GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-10 EM-5 by viltrox
- **How much does it cost?** € 459.03 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/64105334-viltrox-ef-m2-ii-0-71x-speed-booster-adapter-mft)

## Best For

- viltrox enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Autofocus:** Experience smooth and precise autofocus for stunning shots.
- • **Transform Your Lens:** Unlock the full potential of your Canon EF lenses on M4/3 cameras!
- • **Lightweight & Durable:** Crafted with a robust metal design for lasting performance.
- • **Future-Proof Your Gear:** Stay updated with USB firmware upgrades for new features.
- • **Enhanced Aperture Control:** Easily adjust your lens' aperture directly from your camera.

## Overview

The VILTROX EF-M2 II 0.71x Speed Booster Adapter allows Canon EF lenses to be used on Micro 4/3 cameras, enhancing focal length and light intake while providing robust autofocus and adjustable aperture features. Its durable design and USB upgrade capability ensure your gear stays cutting-edge.

## Description

Full description not available

## Features

- Compatibility: VILTROX EF-M2 II is an upgrade version of EF-M2, it is designed for Canon EF series lenses to be used on M4/3 mount cameras, such as GH4 GH5 GF6 GF1 GX1 GX7 GX85 E-M5 E-M10 E-M10II E-PL5(not for EF-S mount lens)
- 0.71x Focal Reducer Converter: focal length is multiplied by 0.71 based on the original (equivalent focal length = focal length x 0.71), which helps enlarge 1 stop aperture
- AF Functions & Adjustable Aperture: auto focusing function, increasing the lens 1 f-stop and the amount of light into the virtual background, better highlight the theme; adjust the aperture directly from camera to control the lens’ actual aperture
- Material & Design: bayonets are made of metal with surface plating treatment, being durable and sturdy; inbuilt copper electronic contacts and IS function, making focus precise and clear, with 1/4" thread tripod foot at the bottom, etc
- USB Firmware Upgrade: Equipped with USB interface, can realize software upgrade. Can perfect new functions of the lens mount adapter and fix bugs according to follow-up upgrades

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | VILTROX |
| Product Dimensions | 10.2 x 11.1 x 5.8 cm; 85 g |
| Item model number | EF-M2_SML |
| Manufacturer | VILTROX |
| Are Batteries Included | No |
| Item Weight | 85 g |
| Guaranteed software updates until | unknown |

## Images

![VILTROX EF-M2 II 0.71x Speed Booster Adapter MFT for EF mount Lens to Micro 4/3 Cameras GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-10 EM-5 - Image 1](https://m.media-amazon.com/images/I/61PWQN2AMZL.jpg)
![VILTROX EF-M2 II 0.71x Speed Booster Adapter MFT for EF mount Lens to Micro 4/3 Cameras GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-10 EM-5 - Image 2](https://m.media-amazon.com/images/I/7188v8LVMvL.jpg)
![VILTROX EF-M2 II 0.71x Speed Booster Adapter MFT for EF mount Lens to Micro 4/3 Cameras GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-10 EM-5 - Image 3](https://m.media-amazon.com/images/I/71m1md30wcL.jpg)
![VILTROX EF-M2 II 0.71x Speed Booster Adapter MFT for EF mount Lens to Micro 4/3 Cameras GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-10 EM-5 - Image 4](https://m.media-amazon.com/images/I/71HdK-ZL0qL.jpg)
![VILTROX EF-M2 II 0.71x Speed Booster Adapter MFT for EF mount Lens to Micro 4/3 Cameras GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-10 EM-5 - Image 5](https://m.media-amazon.com/images/I/71kB8OJCkpL.jpg)

## Available Options

This product comes in different **Size Name** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brilliant value.
*by R***S on 3 June 2018*

After a bit of fiddling with the lens facing glass as per online instructions, I've now got this taking some wonderful images (see above, taken at f4 on my Sigma 18-35 1.8 lens paired with a GH4). It's perhaps not quite as sharp as using a decent native lens. However I intend to use it for video, so it's more than good enough for that. It seems well made - it fits the camera/lens snuggly. Autofocus isn't perfect, but it's actually better than I thought it would be.

### ⭐⭐⭐⭐⭐ The metabones killer
*by D***N on 28 June 2020*

I’ve had this thing for ages now as I couldn’t afford the metabones version. Works perfectly, footage still looks really good. Id buy it again if I broke it for sure.

### ⭐⭐⭐⭐ Not perfect, but close, and great value!
*by T***M on 18 July 2020*

Used on a Panasonic G9 and sigma 18-35 1.8.Cons - There's slight vignetting (might be the lens) and is mitigated by stopping down to around 2.8 and initially the lens couldn't reach infinity focus, but that was easily fixed by rotating the element clockwise until it worked properly.Pros - Image quality seems nice and sharp and the extra stop of light is noticeable when compared to not using a speedbooster. IBIS, AF and aperture all work through the camera, although AF doesn't work well continuously for photos and a bit too noisy for video.Definitely worth it over metabones if you value money

## Frequently Bought Together

- VILTROX EF-M2 II 0.71x Speed Booster Adapter MFT for EF mount Lens to Micro 4/3 Cameras GH6 GH5M2 BMPCC 4K GH4 GH5 G100 G95 G85 OM-1 EM-10 EM-5
- Sigma 210101 18-35mm F1.8 DC HSM Lens for Canon (Filter size 72mm) Black

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-01-22*