---
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: "¥81051"
currency: JPY
in_stock: true
reviews_count: 13
category: "Viltrox"
url: https://www.desertcart.jp/products/64105334-viltrox-ef-m2-ii-0-71x-speed-booster-adapter-mft
store_origin: JP
region: Japan
---

# 0.71x focal reducer for wider FOV USB firmware upgradeable Auto Focus & adjustable 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:** ¥81051
**Availability:** ✅ In Stock

## Summary

> 📸 Unlock pro-level lens power with VILTROX EF-M2 II – your gateway to sharper, brighter, and wider shots!

## 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?** ¥81051 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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

- • **Expand Your Frame:** 0.71x focal reducer boosts your lens to capture more, giving you a wider perspective and sharper images.
- • **Future-Proof Firmware:** USB upgradeable firmware keeps your adapter cutting-edge with new features and bug fixes over time.
- • **Perfect Compatibility:** Optimized for Canon EF lenses on Micro 4/3 cameras like GH5, GH6, BMPCC 4K, and Olympus EM series—unlock your gear’s full potential.
- • **Built to Last & Perform:** Durable metal bayonets with copper contacts ensure precise focus and reliable IS function for professional-grade shooting.
- • **Seamless Autofocus & Aperture Control:** Enjoy smooth AF performance and direct aperture adjustments from your camera for ultimate creative control.

## Overview

The VILTROX EF-M2 II is a premium speed booster adapter designed to mount Canon EF lenses on Micro 4/3 cameras, offering a 0.71x focal length reduction that widens your field of view and increases light intake by 1 stop. Featuring reliable autofocus, adjustable aperture control directly from the camera, durable metal construction, and USB firmware upgradeability, it delivers professional-grade performance at a fraction of the cost of competitors. Compatible with popular models like Panasonic GH5/GH6 and Olympus EM series, it’s the smart choice for millennial pros seeking enhanced image quality and creative flexibility.

## Description

Shop for VILTROX PC products at the desertcart.co.uk Electronics & Photo store.

Review: Why have metabones? - Fitted to my GH5 and Sigma art lenses, superb results and a fraction of the cost of the Metabones, easily as good.
Review: Not perfect, but close, and great value! - 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

## 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 |
|---------------|-------|
| ASIN | B077TQMZL5 |
| Guaranteed software updates until | unknown |
| Item model number | EF-M2_SML |
| Manufacturer | VILTROX |
| Product Dimensions | 10.2 x 11.1 x 5.8 cm; 260 g |

## 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Why have metabones?
*by R***E on 13 April 2018*

Fitted to my GH5 and Sigma art lenses, superb results and a fraction of the cost of the Metabones, easily as good.

### ⭐⭐⭐⭐ 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

### ⭐⭐⭐⭐⭐ Good Quality
*by R***A on 24 April 2020*

Product arrived fast and well packed. Satisfied with the product and overall quality of it. Well built, suits my Gh5 perfectly.

## 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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**Shop now:** [https://www.desertcart.jp/products/64105334-viltrox-ef-m2-ii-0-71x-speed-booster-adapter-mft](https://www.desertcart.jp/products/64105334-viltrox-ef-m2-ii-0-71x-speed-booster-adapter-mft)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-11*