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White Canon EF 2.0x teleconverter barrel, compact cylinder with weather-sealed mount

Canon

Canon Extender EF 2X III 4410B002 2.0x teleconverter camera lens

SKU CH-YDZJ-E0XRC MPN 4410B002

Doubles the focal length of compatible Canon EF L-series lenses with 2.0x magnification, microcomputer communication, and dust-resistant construction

  • Part4410B002
  • TypeConverters & Adapters
  • ColorWhite
  • CompatibilityThis lens is only compatible with fixed focal length L-serie
  • Camera MountCanon EF
  • Magnification2.0x
  • Doubles focal length with 2.0x magnification factor
  • Microcomputer enables communication between lens and camera
  • Spectra coating reduces ghosting and flare effectively
  • Fluorine coating repels water, dust and dirt
  • Dust and water resistant construction for durability

Extender EF 2X III for EF Mount

The Canon Extender EF 2X III is a 2.0x teleconverter designed for Canon EF mount cameras. It doubles the focal length of compatible fixed focal length L-series lenses 135mm and over, as well as specific zoom lenses including 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 is not for photographers using non-L series lenses or focal lengths shorter than 135mm.

Optical Performance and Build Quality

The extender uses 9 elements in 5 groups with Super Spectra coating to reduce ghosting and flare. A fluorine coating on front and rear elements repels water, dust and dirt. Dust and water resistant construction supports use in challenging conditions. A built-in microcomputer maintains communication between camera body, lens and extender for accurate exposure and focus data.

Installation and Compatibility Constraints

The unit attaches between the camera body and a compatible EF lens, adding 2.8 by 2.1 inches and 11.5 oz. Autofocus and metering function only with the listed L-series lenses; other EF lenses will not communicate correctly. Buyers needing compatibility with EF-S mount lenses, third-party glass, or focal lengths below 135mm cannot use this extender.

Highlights

  • Doubles focal length with 2.0x magnification factor
  • Microcomputer enables communication between lens and camera
  • Spectra coating reduces ghosting and flare effectively
  • Fluorine coating repels water, dust and dirt
  • Dust and water resistant construction for durability

Specifications

BrandCanon
ModelExtender EF 2x III
Part4410B002
TypeConverters & Adapters
ColorWhite
CompatibilityThis lens is only compatible with fixed focal length L-series lenses 135mm 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.
Camera MountCanon EF
Magnification2.0x
Lens Construction9 elements in 5 groups
SpecificationsDust and water resistant
FeaturesDesigned to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2X III delivers optical performance on par with the finest 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, flare and chromatic aberration, and even has a new Fluorine coating that keeps soiling, smears, fingerprints to a minimum.
Extender EF 2X III meets necessary standards in terms of rugged, dustproof and water-resistant construction, and sho
Dimensions2.8 x 2.1 in
Weight11.5 oz.
Shipping weight1.93 kg
Package size137 × 95 × 95 mm

Questions about this item

Does the Extender EF 2X III generate heat or draw extra power during all-day shooting?

The extender is a passive optical device with no electronics that consume power or produce noticeable heat during extended use.

Which specific lenses must I already own for this extender to function?

It works only with fixed focal length L-series lenses 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 remain reliable when I pair this 2.0x extender with my older EF 70-200mm f/2.8L?

The built-in microcomputer maintains full communication between that lens and the camera body, preserving autofocus and aperture operation.

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