Canon Extender EF 1.4X III

The Canon 4409B002 is an Extender EF 1.4X III that slips between a compatible Canon L-series telephoto lens and your EOS camera, giving you 1.4 times more reach without adding a large, heavy lens to your bag.

Attach it to a 300 mm lens and you instantly have 420 mm, which is perfect when you need tighter framing on distant wildlife, birds in flight, or action on the far side of the field. An integrated processor keeps the camera, extender, and lens talking smoothly, so autofocus, image stabilization, and exposure metering remain precise. You will lose one stop of light, yet the sharpness and contrast stay high thanks to an optical design that uses seven elements arranged in three groups and Canon’s Super Spectra coatings that cut flare and ghosting.

Front and rear elements carry a fluorine layer that resists fingerprints, dust, and smudges, making on-location clean-ups quick and safe. The barrel is sealed against dust and water, so the extender can ride along on dusty safari tracks, rainy sidelines, or sandy beaches without worry.

At just 7.9 ounces and roughly 2.8 by 1.1 inches, the extender occupies little space in a backpack or messenger bag, yet it can transform the way you shoot. Wildlife photographers can stay farther from skittish subjects, sports shooters can isolate athletes from the crowd, and travel photographers can bring home frame-filling images while carrying only one primary telephoto lens.

Highlights:

• Adds 1.4 × magnification to compatible Canon L-series telephoto and super-telephoto lenses
• Optical path uses seven elements arranged in three groups for high image quality
• Super Spectra coating helps control ghosting and flare
• Fluorine coating on front and rear elements resists fingerprints and moisture
• Integrated processor maintains accurate autofocus, image stabilization, and exposure information
• Dust and water resistance supports reliable use in challenging outdoor conditions
• Compact size of approximately 2.8 × 1.1 inches and weight of 7.9 oz makes it easy to pack
• Reduces the maximum aperture by one stop when attached