The Canon Extender EF 1.4X III is designed to increase the focal length of select Canon EF mount L-series telephoto lenses by 1.4x, providing enhanced reach while preserving image quality. This extender is ideal for wildlife, sports, and photojournalists who need to capture distant subjects without the bulk of additional telephoto lenses. It is compatible with a range of Canon L-series lenses, including fixed focal lengths of 135mm and above, as well as several versions of the EF 70-200mm and EF 100-400mm lenses.

The extender features seven optical elements arranged in three groups, all coated with Canon’s Super Spectra coating to reduce flare and ghosting, ensuring sharp, clear, and accurate images even in challenging lighting conditions. The Fluorine Coating on both the front and rear elements makes cleaning easier by reducing marks such as fingerprints or water spots.

For quick, accurate performance, the Canon Extender EF 1.4X III incorporates an integrated processor that communicates seamlessly between the lens and camera body, allowing for fast autofocus, metering, and precise exposure control. This ensures excellent AF accuracy, even when capturing fast-moving subjects. While the extender reduces the effective maximum aperture by one stop, it maintains the lens’ optical integrity.

Built to withstand demanding conditions, the extender is weather-sealed to protect against dust and moisture, making it reliable for use in challenging environments. A carefully positioned lens release mechanism ensures that the extender can be mounted quickly, reducing exposure time to the elements.

Feature:

• Increases focal length by 1.4x with no compromise on image quality
• Super Spectra coating reduces flare and ghosting for clearer images
• Fluorine Coating helps keep front and rear elements clean by minimizing fingerprints and watermarks
• Integrated processor enables fast and accurate autofocus and metering
• Weather-sealed for protection against dust and moisture
• Compatible with select L-series lenses, including those 135mm and over
• Reduces effective maximum aperture by one stop

Specifications: