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Rent NowCanon EF 1.4x II Extender
The Canon EF 1.4x II Extender is a high-performance teleconverter designed to increase the reach of your existing telephoto lenses by 40%. Ideal for wildlife, nature, and sports photographers, this extender allows you to get closer to the action while maintaining professional image quality. Built to Canon’s exacting L-series standards, the Mark II version features improved anti-reflective coatings and a rugged, weather-resistant design, making it a reliable companion for your most demanding outdoor shoots.
Enhanced Reach & Optical Performance
1.4x Magnification: Instantly convert a 300mm lens into a 420mm or a 500mm into a 700mm. This magnification factor offers a significant increase in reach with minimal impact on overall lens speed.
Improved Coatings: Advanced anti-reflective internal coatings increase light transmissivity and reduce flare, ensuring high-contrast imagery even when shooting in challenging backlit conditions.
Aperture & Light Loss: When attached, the extender reduces the effective maximum aperture by one f/stop. For example, an f/2.8 lens effectively becomes an f/4, and an f/4 lens becomes f/5.6.
Preserved Image Quality: Engineered specifically for Canon’s high-end telephotos, the optical design ensures that the sharpness and color accuracy of your master lens are preserved.
Built for the Field
Weather-Resistant Sealing: Featuring integrated rubber gasket seals, this extender is designed to match the weather resistance of pro-level EOS bodies and EF super-telephoto lenses. It is built to perform in extreme environments, from rain to dust.
Compact & Lightweight: Adding just a few ounces to your kit, the 1.4x extender is a much more portable alternative to carrying an additional long-range prime or zoom lens.
Integrated Micro-Processor: The extender communicates vital metadata between the lens and camera, ensuring accurate metering and ID information are recorded in your EXIF data.
Compatibility & Focus Notes
Note: This extender is designed for use with select L-series telephoto lenses (typically 135mm and up) and is not compatible with wide-angle lenses or standard zooms (e.g., 28-105mm).
Autofocus Performance: AF is fully supported on any EOS camera when used with a lens having a maximum aperture of f/4 or faster.
Focus Point Availability: On most EOS bodies, autofocus is restricted to the center focus point when an extender is attached.
Pro-Body AF Support: With specific lenses like the 100-400mm or 400mm DO, autofocus remains possible (center point only) when used with professional-tier bodies like the EOS-1D and 1Ds series or the EOS 3.
Macro Performance: When paired with the EF 180mm f/3.5L Macro USM, the AF range is adjusted to 2.6′ to infinity.
Technical Specifications
Magnification: 1.4x
Aperture Loss: 1 Stop
Lens Mount: Canon EF
Lens Construction: 5 Elements in 4 Groups
Weight: Approx. 7.8 oz (220 g)
