The post Canon’s Rumored Super-Telephoto Lens: The RF 200-500mm f/4L 1.4x appeared first on Digital Photography School. It was authored by Jaymes Dempsey. Canon’s professional super-telephoto lens lineup is nearly complete. Since the launch of the RF-mount, the company has released a series of class-leading ultra-telephotos to suit professional sports and wildlife photographers, including the RF 400mm f/2.8L IS USM, the RF 600mm f/4L IS USM, the RF 800mm f/5.6L IS USM, and even the (ridiculously expensive) RF 1200mm f/8L IS USM. The April debut of the RF 100-300mm f/2.8L IS USM further rounded out the lineup, but with a notable gap: Canon has yet to develop a 500mm f/4L. Sure, you can grab the RF 100-500mm f/4.5-7.1, but the zoom’s...