---
product_id: 1798936
title: "Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses"
brand: "canon"
price: "4541 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Canon"
url: https://www.desertcart.ro/products/1798936-canon-ef-1-4x-iii-telephoto-extender-for-canon-super
store_origin: RO
region: Romania
---

# Fluorine coating resists smudges & dirt 1.4x focal length boost 7 elements in 3 groups optical design Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses

**Brand:** canon
**Price:** 4541 Lei
**Availability:** ✅ In Stock

## Summary

> 📸 Elevate every shot — don’t just capture moments, own them!

## Quick Answers

- **What is this?** Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses by canon
- **How much does it cost?** 4541 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/1798936-canon-ef-1-4x-iii-telephoto-extender-for-canon-super)

## Best For

- canon enthusiasts

## Why This Product

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

## Key Features

- • **Stay Spotless & Sharp:** Advanced Fluorine coating repels fingerprints and smudges for hassle-free shooting.
- • **Smart Communication Tech:** Built-in microcomputer ensures flawless syncing with your Canon camera body and lens.
- • **Extend Your Reach Seamlessly:** Boost your lens focal length by 1.4x without compromising image quality.
- • **Rugged & Ready for Adventure:** Dustproof, water-resistant build designed for professional outdoor use.
- • **Precision Optics for Crystal Clarity:** 7-element, 3-group construction minimizes chromatic aberration and flare.

## Overview

The Canon EF 1.4X III Telephoto Extender amplifies your Canon super telephoto lenses by 1.4x, delivering superior optical performance with minimal chromatic aberration. Featuring a sophisticated 7-element, 3-group lens design and a built-in microcomputer, it ensures seamless communication with your camera for precise autofocus and exposure. Its rugged, dustproof, and water-resistant construction, combined with a cutting-edge Fluorine coating, keeps your gear clean and ready for any shoot. Lightweight yet durable, this extender is a must-have for professionals and serious enthusiasts aiming to push their telephoto capabilities without investing in bulkier lenses.

## Description

From the Manufacturer Extending a lens's focal length by a factor of 1.4x, the Extender EF 1.4X III incorporates phenomenal optical performance with minimal chromatic aberration and is a perfect complement to many of Canon super telephoto lenses. It features a built-in microcomputer for seamless communication among camera body, lens and extender; features careful lens placement and coatings to minimize ghosting and flare and even has a new Fluorine coating that keeps soiling, smears and fingerprints to a minimum. An integral part of many professional systems, Extender EF 1.4X III maintains high standards not only optically, but also in terms of rugged, dustproof and water resistant construction. Technical SpecificationsFocal Length & Maximum Aperture Magnification: 1.4x Lens Construction 7 elements in 3 groups Max. Diameter x Length, Wight 2.8 x 1.1 in, 7.9 oz / 72.0 x 27.2mm, 225g Product Description Extending a lens' focal length by a factor of 1.4x, Extender EF 1.4X III incorporates phenomenal optical performances with minimal chromatic aberration and is a perfect complement to many of Canon super telephoto lenses. It features a built-in microcomputer for seamless communication among camera body, lens and extender; features careful lens placement and coatings to minimize ghosting and flare and even has a new Fluorine coating that keeps soiling, smears and fingerprints to a minimum. An integral part of many professional systems, Extender EF 1.4X III maintains high standards no only optically, but also in terms of rugged, dustproof and water resistant construction.

Review: WARNIING: Have to do one thing when you get this for good photos - As an amateur photographer who lives in Alaska and loves to shoot wildlife I was wanting this badly and finally grabbed it right before I went on a bear viewing trip. Design: As with everything with Canon, these are really well designed and work perfectly. They even updated the color on these to help them match better with the newer version of the 70-200 and the 100-400, so that is a nice bonus. It is light but still has some good weight to it so you can feel the quality construction. As for the use of this, it works perfectly with the EF lens series. I can also verify that it works with the RF-EF adapter on the mirrorless cameras. REMEMBER THAT THIS WILL MOVE EVERYTHING UP ONE STOP ON THE CAMERA and EFFECTS THE AUTOFOCUS POINTS. MICRO-ADJUST THE CAMERA TO ENSURE BEST FOCUS or, like me, your photos will just seem to be slightly soft on focus Cost: I purchased it for $340, currently $429 Overall: I am a Canon equipment user and this is just another in a long line of great products Positives: ++Cost (but I got it almost 25% off) ++Design Negatives: --Autofocus effects --F-Stop adjustment Would I recommend: Absolutely/Borderline. Absolutely I would buy it again, borderline if you are not sure what to do with the other settings on your camera. Photos attached with the adapter on
Review: Good piece of equipment - Quick and easy to use in the field. I use a crop sensor camera. This extender is just enough & helps me not have to shell out huge bucks for a 800mm lens, and does the trick. Must stop down 1-2, and photo is a tad grainier; however, I need to micro-adjust my camera first before totally blaming the softness of my shots on this extender. Works well, and glad I have it. Easier than carrying around my Tamron 600mm weight wise, although it does add a bit of forward weight. For the $, I'd say it's a good choice for me. I have the 2x extender, but find this extender's pic quality is better, and less cumbersome to shoot with.

## Features

- Focal Length & Maximum Aperture Magnification: 1.4x
- Lens Construction of 7 elements in 3 groups
- Max. Diameter x Length - 2.8" x 1.1" (72.0mm x 27.2mm)
- Weight - 7.9 oz (225g)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0040X4PUE |
| Best Sellers Rank | #514 in SLR Camera Lenses |
| Brand | Canon |
| Built-In Media | Lens |
| Camera Lens | Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses |
| Camera Lens Description | Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses |
| Compatible Camera Mount | Canon EF |
| Compatible Mountings | Canon EF |
| Customer Reviews | 4.5 out of 5 stars 391 Reviews |
| Focal Length Description | 1.4x Extender III for Canon EF |
| Focus Type | Auto Focus |
| Global Trade Identification Number | 00013803122145, 00572380293445 |
| Image stabilization | Optical |
| Item Height | 7.2 centimeters |
| Item Weight | 222 Grams |
| Lens | Telephoto |
| Lens Coating Description | Fluorine Coating |
| Lens Design | Prime |
| Lens Fixed Focal Length | 2 Millimeters |
| Lens Mount | Canon EF |
| Lens Type | Telephoto |
| Manufacturer | Canon Cameras US |
| Maximum Aperture | 5.6 f |
| Maximum Focal Length | 30 |
| Minimum Aperture | 10 |
| Minimum Focal Length | 10 |
| Model Name | extender ef |
| Real Angle Of View | 71.43 Degrees |
| UPC | 779184196464 013803122145 572380293445 |
| Warranty Description | 1 year limited |
| Zoom Ratio | 1.4:1 |

## Product Details

- **Brand:** Canon
- **Camera Lens Description:** Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses
- **Compatible Mountings:** Canon EF
- **Focal Length Description:** 1.4x Extender III for Canon EF
- **Lens Type:** Telephoto

## Images

![Canon EF 1.4X III Telephoto Extender for Canon Super Telephoto Lenses - Image 1](https://m.media-amazon.com/images/I/71b6oag0VmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ WARNIING: Have to do one thing when you get this for good photos
*by M***. on December 5, 2019*

As an amateur photographer who lives in Alaska and loves to shoot wildlife I was wanting this badly and finally grabbed it right before I went on a bear viewing trip. Design: As with everything with Canon, these are really well designed and work perfectly. They even updated the color on these to help them match better with the newer version of the 70-200 and the 100-400, so that is a nice bonus. It is light but still has some good weight to it so you can feel the quality construction. As for the use of this, it works perfectly with the EF lens series. I can also verify that it works with the RF-EF adapter on the mirrorless cameras. REMEMBER THAT THIS WILL MOVE EVERYTHING UP ONE STOP ON THE CAMERA and EFFECTS THE AUTOFOCUS POINTS. MICRO-ADJUST THE CAMERA TO ENSURE BEST FOCUS or, like me, your photos will just seem to be slightly soft on focus Cost: I purchased it for $340, currently $429 Overall: I am a Canon equipment user and this is just another in a long line of great products Positives: ++Cost (but I got it almost 25% off) ++Design Negatives: --Autofocus effects --F-Stop adjustment Would I recommend: Absolutely/Borderline. Absolutely I would buy it again, borderline if you are not sure what to do with the other settings on your camera. Photos attached with the adapter on

### ⭐⭐⭐⭐⭐ Good piece of equipment
*by Z***L on December 14, 2020*

Quick and easy to use in the field. I use a crop sensor camera. This extender is just enough & helps me not have to shell out huge bucks for a 800mm lens, and does the trick. Must stop down 1-2, and photo is a tad grainier; however, I need to micro-adjust my camera first before totally blaming the softness of my shots on this extender. Works well, and glad I have it. Easier than carrying around my Tamron 600mm weight wise, although it does add a bit of forward weight. For the $, I'd say it's a good choice for me. I have the 2x extender, but find this extender's pic quality is better, and less cumbersome to shoot with.

### ⭐⭐⭐⭐⭐ Expected Canon Quality!
*by D***T on March 25, 2014*

With the Canon EF 1.4X III you can extend your lens focal length and still have fantastic picture quality for much less than buying a new lens. NOTE: The auto focus compatibility is a little confusing. Canon states that auto focus will work if your lens max lens aperture is 5.6 or faster. I also verified that Canon states that this extender is compatible with the Canon EF 100-400 f/4.5-5.6 lens. So, I assumed that the auto focus would work with my Canon EF 100-400 L IS lens since it is a f/4.5-5.6. But, the compatible aperture opening is figure for "after" your EF 1.4X III has been attached to your lens. Thus, the decreased aperture opening put the lens out of auto focus ability. I thought this was very misleading. The auto focus works well with this on my EF 70-200 f/2.8 lens, but I already have a EF 2X II that works fine with that. I highly recommend this Canon EF 1.4X III Extender, but be aware of autofocus compatibility.

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-08*