Sigma APO Tele Converter 1.4x EX DG – Canon EF Mount Cameras
 
Compact optical extender that increases the reach of compatible Sigma telephoto lenses by 40%
This Sigma APO 1.4x EX DG teleconverter mounts between a compatible Sigma telephoto lens and a Canon EF camera body, increasing the lens’s focal length by 1.4 times. It is useful for wildlife, sports, outdoor, and distant-subject photography when additional reach is needed without carrying a longer lens. Electronic contacts maintain communication between compatible lenses and camera bodies for exposure information and supported autofocus operation.
 
Condition:
Excellent pre-owned physical condition with only very light cosmetic signs from normal handling. The exterior, release lever, electronic contacts, and metal mounting surfaces are clean and well maintained.
The internal glass elements are clean and clear with no visible scratches, haze, dust, or fungus. No functional issues noted.
 
Includes:
Sigma APO Tele Converter 1.4x EX DG for Canon EF mount
Front and rear protective caps shown in the photos
Not included: Case, original box, paperwork, or additional accessories
 
Key Features:
1.4x Focal-Length Increase: Extends a compatible lens’s focal length by approximately 40%.
One-Stop Light Reduction: A compatible 70–200mm f/2.8 lens becomes approximately a 98–280mm f/4 combination.
Canon EF Mount: Designed for use between compatible Sigma telephoto lenses and Canon EF DSLR bodies.
Electronic Communication: Passes exposure and lens information between supported lenses and cameras.
Autofocus Support: Retains autofocus with compatible lens and camera combinations.
APO Optical Design: Helps maintain clarity while controlling chromatic aberration.
Multi-Layer Coating: Helps reduce flare and ghosting.
Full-Frame and APS-C Use: Compatible with supported Canon EF full-frame and APS-C DSLR systems.
Compact Construction: Adds reach without the size and weight of another telephoto lens.
Made in Japan: Solid Sigma EX-series construction.
 
Technical Specifications:
Mount and Format: Canon EF; compatible with full-frame and APS-C DSLR bodies
Magnification and Exposure: 1.4x focal-length increase with approximately one stop of light loss
Optical Construction: Five elements in three groups
Communication: Electronic aperture, metering, and supported autofocus pass-through
Compatibility: Designed for select compatible Sigma telephoto lenses; not universally compatible with every Canon EF lens
Manufacturing: Made in Japan
 
Frequently Asked Questions:
Does this work with every Canon EF lens?
No. It is designed for select compatible Sigma telephoto lenses, so the exact lens model should be checked before purchase.
How much additional reach does it provide?
It multiplies the attached lens’s focal length by 1.4 times.
How does it affect the aperture?
The maximum aperture is reduced by approximately one stop.
Are the internal optics clean?
Yes. The glass is clean with no visible scratches, haze, dust, or fungus.
What accessories are included?
The converter and the front and rear protective caps shown in the photos are included.