Best Canon Lenses Under £800 in 2026

Its 7-element optical design with Super Spectra and Fluorine coatings maintains sharpness and contrast while extending reach by 1.4x with minimal ghosting. The built-in microcomputer ensures seamless autofocus and exposure communication, housed in a rugged, weather-sealed body weighing just 225g. This extender is best for street and portrait photographers using compatible Canon L-series telephotos who need extra focal length without sacrificing optical quality.