The Canon EF-M is a lens mount system designed for Canon's mirrorless cameras, specifically the EOS M series. Introduced in 2012, it allows for a compact design while maintaining high image quality. The EF-M mount supports a variety of lenses, including wide-angle, telephoto, and macro options, catering to different photography needs. The EF-M lenses feature a shorter flange distance, enabling a more compact camera body. This system is compatible with Canon's APS-C sensor format, providing a crop factor of 1.6x. Overall, the Canon EF-M system is ideal for photographers seeking portability without sacrificing performance.