---
product_id: 55931249
title: "VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring Automatic Converter Compatible with Canon EOS EF/EF-S Lens to Sony E-mount NEX A9II A7III A9 A7RIII A7RII A7II A7R A7m3"
brand: "viltrox"
price: "362 som"
currency: KGS
in_stock: false
reviews_count: 8
url: https://www.desertcart.kg/products/55931249-viltrox-ef-nex-iv-electronic-auto-focus-af-lens-mount
store_origin: KG
region: Kyrgyzstan
---

# Dual AF Modes 4th Gen Compatibility Built-in IS Stabilization VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring Automatic Converter Compatible with Canon EOS EF/EF-S Lens to Sony E-mount NEX A9II A7III A9 A7RIII A7RII A7II A7R A7m3

**Brand:** viltrox
**Price:** 362 som
**Availability:** ❌ Out of Stock

## Summary

> 📸 Capture the Moment, Elevate Your Craft!

## Quick Answers

- **What is this?** VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring Automatic Converter Compatible with Canon EOS EF/EF-S Lens to Sony E-mount NEX A9II A7III A9 A7RIII A7RII A7II A7R A7m3 by viltrox
- **How much does it cost?** 362 som with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/55931249-viltrox-ef-nex-iv-electronic-auto-focus-af-lens-mount)

## 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 Compatibility:** Effortlessly connect Canon EF/EF-S lenses to Sony E-mount cameras.
- • **Swift Focus Transition:** Experience lightning-fast switching between PDAF and CDAF modes for optimal focus.
- • **Precision Aperture Control:** Adjust your lens aperture directly from your camera for perfect exposure.
- • **Stylish & Functional Design:** Upgrade your gear with a fashionable adapter that supports tripod mounting.
- • **Enhanced Signal Transmission:** Enjoy superior EXIF signal transmission for a seamless shooting experience.

## Overview

The VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring is a cutting-edge solution for photographers looking to use Canon EF/EF-S lenses on Sony E-mount cameras. With dual auto-focus modes, built-in image stabilization, and precise aperture control, this adapter enhances your shooting experience while ensuring compatibility and performance.

## Description

desertcart.com : VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring Automatic Converter Compatible with Canon EOS EF/EF-S Lens to Sony E-mount NEX A9II A7III A9 A7RIII A7RII A7II A7R A7m3 : Electronics

Review: Works with video autofocus with new update!!! - I normally dont write a review, but it took me years and lots of research and now this is the only adapters where i can you all of my canon L glass on my Sony A7iii with video autofocus. Metabones and other so-called high end brands can't even touch this feature. The only cons you will notice ad might bother you is that sometimes you have to detach and attach the adapters with lens again in order to get it functions. It really dont bothers me at much after i got used to compares to manual focus.
Review: Mixed Feelings - I am able to use all my EF mounts on my Sony A6300, but it takes forever to focus in live mode... if it even does. Nor does the adapter allow you to back focus. Image Quality is great... but... other then that... I wish I purchased a high end Metabones adapter.

## Features

- 📷【Compatibility】The 4nd generation{canon ef/ef-s to sony E adapter}! EF-NEX IV version, allows Canon EF and EF-S mount series lenses to be mounted on Sony NEX E-mount series cameras. Please contact us if you're not sure whether this lens adapter ring fits for your camera or lens.
- 📷【Dual Auto Focus mode function】PDAF mode (phase detection auto focus): Focus speed is faster. CDAF mode (contrast detection auto focus): Focus success rate is higher. Fast switching between two focus modes, effectively improve focusing speed.
- 📷【Aperture Control & Built-in IS Stabilization】Interior built-in aperture motor and an electronic contact; aperture of the lens controlled by means of an electronic contact; aperture control functions almost support all Sony NEX E-mount cameras; aperture can be adjusted directly from the camera side to control the actual aperture of the lens. Built-in IS stability, making focus more accurate and clear and better help you to take pictures.
- 📷【EXIF Signal Transmission】use PIN gold plated needle to transmit signal, greatly enhancing its transmission performance; enjoy EXIF signal transmission, AF(auto-focus) and adjustable aperture, etc.
- 📷【Fashionable Design】USB firmware upgrade; designed with 1/4 screws at the bottom, which can be mounted on tripod or other support platform; detachable support tripod. A great smart adapter.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078MSNQDG |
| Best Sellers Rank | #1,715 in Camera Lens Adapters & Converters |
| Customer Reviews | 3.4 3.4 out of 5 stars (37) |
| Date First Available | December 26, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 10.2 ounces |
| Item model number | 945706 |
| Manufacturer | VILTROX |
| Package Dimensions | 4.69 x 3.98 x 2.64 inches |

## Images

![VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring Automatic Converter Compatible with Canon EOS EF/EF-S Lens to Sony E-mount NEX A9II A7III A9 A7RIII A7RII A7II A7R A7m3 - Image 1](https://m.media-amazon.com/images/I/61I2i7kmsyL.jpg)
![VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring Automatic Converter Compatible with Canon EOS EF/EF-S Lens to Sony E-mount NEX A9II A7III A9 A7RIII A7RII A7II A7R A7m3 - Image 2](https://m.media-amazon.com/images/I/61NOuxdg9HL.jpg)
![VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring Automatic Converter Compatible with Canon EOS EF/EF-S Lens to Sony E-mount NEX A9II A7III A9 A7RIII A7RII A7II A7R A7m3 - Image 3](https://m.media-amazon.com/images/I/71mZHgQjykL.jpg)
![VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring Automatic Converter Compatible with Canon EOS EF/EF-S Lens to Sony E-mount NEX A9II A7III A9 A7RIII A7RII A7II A7R A7m3 - Image 4](https://m.media-amazon.com/images/I/71RM7dw0H0L.jpg)
![VILTROX EF-NEX IV Electronic Auto-Focus AF Lens Mount Adapter Ring Automatic Converter Compatible with Canon EOS EF/EF-S Lens to Sony E-mount NEX A9II A7III A9 A7RIII A7RII A7II A7R A7m3 - Image 5](https://m.media-amazon.com/images/I/71NKQlfFuML.jpg)

## Questions & Answers

**Q: Is it a newer version? i mean the usb port is inside of the adapter but not on the outter surface.**
A: Hello, first of all thank you for your attention.
viltrox ef-nex IV, this is the latest version, including the upgrade of the USB port (the version of the internal USB slot). Because of the external USB slot, it will cause dust to hide, so improve this.
Our pictures were not updated in time. thanks for your reminder.
In addition, this product is very popular, you don't have to worry about its quality.

**Q: Does it support sigma 18-35**
A: If it is an EF mount yes.

**Q: Does this support IS?**
A: YES

**Q: sony a7 iv compattible?**
A: No. A9II A7III A9 A7RIII A7RII A7II A7R A7m3 ate the only ones compatible

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works with video autofocus with new update!!!
*by T***I on August 7, 2020*

I normally dont write a review, but it took me years and lots of research and now this is the only adapters where i can you all of my canon L glass on my Sony A7iii with video autofocus. Metabones and other so-called high end brands can't even touch this feature. The only cons you will notice ad might bother you is that sometimes you have to detach and attach the adapters with lens again in order to get it functions. It really dont bothers me at much after i got used to compares to manual focus.

### ⭐⭐⭐ Mixed Feelings
*by M***E on October 5, 2019*

I am able to use all my EF mounts on my Sony A6300, but it takes forever to focus in live mode... if it even does. Nor does the adapter allow you to back focus. Image Quality is great... but... other then that... I wish I purchased a high end Metabones adapter.

### ⭐ Expected better from Viltrox.
*by Z***K on November 8, 2024*

Updating the firmware was incredibly clunky, the app didn't work, and once I finally found the actual file to download I had to download additional software to open it. After that the adapter doesn't even work it just hunts for focus going in and out of focus but never finding it.

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**Shop now:** [https://www.desertcart.kg/products/55931249-viltrox-ef-nex-iv-electronic-auto-focus-af-lens-mount](https://www.desertcart.kg/products/55931249-viltrox-ef-nex-iv-electronic-auto-focus-af-lens-mount)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-05-13*