In their latest annual report, Canon announced that it has rolled out automated production lines for cameras and interchangeable lenses to further enhance productivity:
Productivity Improvements Through Automation and In-House Production
Canon aims to achieve further production efficiency by leveraging technologies cultivated in different businesses regardless of divisions and by collaboration among design, production engineering, and manufacturing sites, to refine its automation and in-house production technologies. In addition to key devices and components, we are also actively pursuing in-house production of production equipment and molding dies. Following toner cartridges, we have rolled out automated production lines for cameras and interchangeable lenses to further enhance productivity.
Source: Canon annual report