Canon Patent Application Shows EF-S 15-55mm f/2.8-4 and EF-S 18-300mm f/3-6.3 Lenses September 7, 2015 By Eric Reagan Canon EF-S 15-55mm f/2.8-4 STM Lens Patent Diagram A recently published Canon patent application reveals a couple new lenses for the APS-C format cameras. [Read more…]