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White Canon EF 1.4x extender cylinder, 2.8 by 1.1 inches, 7.9 oz

Canon

Canon 4409B002 1.4x EF Extender III White camera lens

SKU CH-0E8J-86E54 MPN 4409B002

Extends compatible L-series telephoto lenses by 1.4x with microcomputer communication, Spectra and fluorine coatings, plus dust- and water-resistant construction

  • Lens mountCanon EF
  • Magnifying power1.4x
  • Optical construction7 elements in 3 groups
  • Product typeConverters & Adapters
  • Product colorWhite
  • Compatible withThis lens is only compatible with fixed focal length L-serie
  • Extends focal length by 1.4x for distant subjects
  • Microcomputer enables communication between body, lens and extender
  • Spectra coating reduces ghosting and flare in bright light
  • Fluorine coating resists smears and fingerprints on elements
  • Dust and water resistant construction suits outdoor use

Canon 1.4x EF Extender III Overview

The Canon Extender EF 1.4x III multiplies the focal length of compatible L-series lenses by a factor of 1.4x. It uses a 7-element, 3-group optical design with Spectra coating to reduce ghosting and flare. A built-in microcomputer maintains communication between the camera body and lens. The extender features a white finish and weighs 7.9 oz.

Suitable Lenses and Limitations

This extender works only with fixed focal length L-series lenses of 135 mm and longer, plus the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L. It will not function with other EF or EF-S lenses, nor with third-party glass. Photographers needing wider compatibility should look at alternative solutions.

Installation and Common Issues

The unit mounts between the camera body and lens via the standard Canon EF mount, adding 1.1 inches to the optical path. Dust and water resistant construction protects the internals during field use. The fluorine coating on the front and rear elements resists smears and fingerprints. Autofocus speed may decrease slightly due to the reduced maximum aperture.

How it compares

Measured against everything we stock in Interchangeable Camera Lenses, at today’s prices. Recalculated every night.

Price $524.99
Typical for this category: the median of 2,570 items is $546.49.

Specifications

Product
Brand nameCanon
Model name4409B002
Product typeConverters & Adapters
Product colorWhite
Audio & video
Lens mountCanon EF
Optical construction7 elements in 3 groups
Size & build
Product dimensions2.8 × 1.1 in
Product weight7.9 oz
Shipping weight0.35 kg
Package size121 × 95 × 95 mm
Compatibility
Compatible withThis lens is only compatible with fixed focal length L-series lenses 135 mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L.
More details
Magnifying power1.4x

Questions about this item

Which of my current Canon EF lenses can I attach this 1.4x Extender III to?

It works with fixed focal length L-series lenses of 135mm and longer, plus the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L and EF 100-400/4.5-5.6L.

Will autofocus and aperture control still function on my older compatible L-series lens when this extender is mounted?

Yes, the built-in microcomputer maintains full electronic communication between the camera body, lens and extender for autofocus and aperture operation.

How can I verify the extender is performing correctly after I attach it?

Check that the viewfinder or LCD shows the expected 1.4x focal length increase, autofocus locks accurately, and images exhibit minimal ghosting or flare thanks to the Spectra and fluorine coatings.

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