RF135mm F1.8 IS USM

and bright - medium telephoto lens featuring 17 optical elements in 12 groups image quality with three UD perfectly placed to reduce chromatic aberration, and (ASC) to prevent ghosting image stabilization at up to 5.5 stops of shake correction. to 8 stops* of shake correction when paired with EOS series cameras featuring - (IBIS) USM for AF drive that is both fast and smooth, and is also quiet enough to use when shooting movies programmable lens function buttons (one on the top and one on the side), previously only available on super-telephoto lenses