The Canon RF 28-70mm f/2L USM is a versatile zoom lens designed for the RF mount, offering a constant f/2 maximum aperture across its entire focal range. This capability allows you to capture images with a shallow depth of field and maintain strong performance in low-light environments without needing to switch to prime lenses. Its optical system consists of 19 elements in 13 groups, utilizing nine rounded aperture blades to create smooth, natural background blur. Built for professional use, the lens features a weather-sealed construction to protect your gear during outdoor shoots. It weighs 1430g and measures 103.8 x 139.8mm, extending to 168.3mm when fully zoomed. The USM ultrasonic motor ensures fast and quiet autofocus, while the full-time manual focus allows you to make fine adjustments instantly. It comes with a 95mm filter diameter and includes the EW-103 lens hood and an LP1424 carrying case for added protection.