Canon 6845A004 EF 1.4x II Telephoto Extender (Used)

The Canon Extender EF 1.4x II is a teleconverter that multiplies the focal length of compatible Canon lenses by 1.4 times, turning a 200mm lens into a 280mm and a 400mm into a 560mm. Built with a 5-element, 4-group optical design, it is engineered to maintain strong image quality while extending your reach. The extender preserves autofocus functionality on any Canon EOS body when paired with lenses that have a maximum aperture of f/4 or faster, making it a practical choice for action and wildlife photography where autofocus speed matters.

Physically, the extender is remarkably compact at just 2.9 inches in diameter and 1.1 inches long, weighing only 7.8 ounces. It slips between the camera body and lens with minimal impact on handling balance. Weather-resistant construction allows confident use in outdoor conditions, and improved anti-reflective surfaces inside the barrel help suppress flare and internal reflections. The trade-off for the added reach is a one-stop reduction in effective aperture — a standard characteristic of 1.4x extenders — which is worth considering for low-light shooting scenarios. This used unit offers an opportunity to add the extender to your kit at a reduced cost.