The bright f/ 1.8 aperture also does wonders for your images. Not only can you achieve beautiful, soft backgrounds, it transforms your ability to shoot telephoto images or video at low light levels. The RF135mm F 1.8 L IS USM also comes with built-in Optical Image Stabilization (not previously seen on a Canon 135mm lens) to further enhance your low-light shooting abilities by providing up to 5.5 stops* of optical shake correction, and up to 8 stops* with Coordinated IS. Two programmable lens function buttons on the top and side of the lens barrel allow instant access to temporarily lock servo AP, or a multitude of other possible camera features.


