Welcome to keh.com!
Theme gray image

Canon 2X EF Extender Teleconverter (L Series Tele/Zoom Lenses)

Model #212436
  • $175.00

Select Gear Grade
Our Grading System
New in box complete with manufacturer's USA warranty. Not previously owned or used.
Essentially new with no signs of use. “Open box.” In manufacturer's packaging with original accessories and instructions. 180-day warranty.
Barely used with virtually no traces of wear. Only the closest inspections will reveal slight use. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Lightly used with limited signs of wear. Exceptionally nice but may have slight wear on finish visible. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Noticeably used with average signs of wear. Shows moderate wear for the age of the item, with the possibility of blemishes and/or minimal dings. Lens glass may have average dust and zoom/focus ring tension may have slight looseness or tightness overall, but will not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Frequently used with above-average wear. May have dents, dings, or finish loss. Lens glass may have small scratches, dust, and blemishes, and zoom/focus ring tension may have moderate looseness or tightness overall, but should not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.
Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.
EX Excellent
With Case and Caps
$185.00
Only 1 left!
EX Excellent
With Caps
$175.00
Only 3 left!
BN Bargain
$134.00
Only 1 left!
Free 180 Day warranty on all purchases
FREE SHIPPING OVER $75 + FREE 21-DAY RETURNS
Talk with an expert:
1-800-342-5534

The Canon 2X EF Extender is a professional grade teleconverter designed exclusively for use with select Canon brand L-Series lenses (focal lengths over 135mm).  Doubling the lens focal length, Extender EF 2X incorporates incorporates careful lens placement and anti-reflective coatings for high quality optical performance.  The converter also features a built-in microcomputer for seamless communication between camera body, lens, and extender.  Extender EF 2X maintains high standards not only optically, but also in terms of the rugged construction pros expect.  Often an integral part of a professional's kit, Extender EF 2X is a very practical complement to compatible* telephoto lenses.

Originally Introduced in 1987, the 2X EF Extender has been a staple among Canon Pros ever since.  In 2001 Canon released an improved 2X EF Extender II that features some weather sealing and a refined optical design.

Key Features

  • High quality optics, 7 elements in 5 groups
  • Multiplies focal length by 2X
  • Reduces effective maximum aperture by two f/stops
  • EF Mount but only accepts select Professional L-Series lenses
  • Less cumbersome than carrying another large lens

Compatible* Lenses include:

  • EF 70-200mm f/2.8L USM
  • EF 70-200mm f/2.8L IS USM
  • EF 70-200mm f/2.8L IS II USM
  • EF 70-200mm f/4L USM
  • EF 70-200mm f/4L IS USM
  • EF 100-400mm f/4.5-5.6L IS USM
  • EF 100-400mm f/4.5-5.6L IS II USM
  • EF 135mm f/2L USM
  • EF 180mm f/3.5L Macro USM
  • EF 200mm f/1.8L USM
  • EF 200mm f/2.8L USM
  • EF 200mm f/2.8L II USM
  • EF 200mm f/2L IS USM
  • EF 300mm f/2.8L USM
  • EF 300mm f/2.8L IS USM
  • EF 300mm f/2.8L IS II USM
  • EF 300mm f/4L USM
  • EF 300mm f/4L IS USM
  • EF 400mm f/2.8L USM
  • EF 400mm f/2.8L II USM
  • EF 400mm f/2.8L IS USM
  • EF 400mm f/2.8L IS II USM
  • EF 400mm f/4 DO IS USM
  • EF 400mm f/4 DO IS USM II
  • EF 400mm f/5.6L USM
  • EF 500mm f/4.5L USM
  • EF 500mm f/4L IS USM
  • EF 500mm f/4L IS II USM
  • EF 600mm f/4L USM
  • EF 600mm f/4L II USM
  • EF 600mm f/4L IS USM
  • EF 600mm f/4L IS II USM
  • EF 800mm f/5.6L IS USM

*Compatibility Note: if the effective maximum aperture of the converter and lens combination exceeds the capabilities of your cameras's AF system then autofocus will not be possible.

Brand Name Canon
Focus Type Autofocus (lens motor)
Lens Mount Canon EF