The Canon e-HDxs HJ21ex7.5B-IRSE is a 21x 2/3" telephoto lens built to offer high performance in HDTV news gathering. The lens is lightweight and can be relied upon under harsh conditions. Additionally, it's equipped with features such as internal focus and shuttle-shot programmable positioning. The focal-length range is 7.5-158mm with a minimum object distance of 2.8' (0.9 m). This lens has a 2x extender for doubling focal length.