India
India
Canon introduced the EOS R System, and the RF mount, in 2018 — just over 30 years after the launch of the EF mount and EOS System. This imaging system marked the start of a new era for Canon, offering greater flexibility and growth potential. Since the objective of the EOS R System was to expand the range of possibilities to support the future needs of both photo and video users, Canon recognized the need for a lens mount with new specifications that would ensure maximum growth potential and optical design flexibility. Canon developed the RF mount as the foundation for the EOS R System, with its main focus to develop a new line of lenses to support an imaging system with the potential to evolve and advance well into future.
The RF mount uses a large, 54mm-inner-diameter barrel and short back focus distance of 20mm to dramatically increase the optical design flexibility and support the development of new and unique lens designs. This mount has the potential to develop large-aperture standard zoom lenses with a maximum f-stop of f/2 such as the RF28-70mm f/2 L USM lens — Another major feature of the RF mount and EOS R System is the new 12-pin communication system. It greatly improves communication speed, instantly transmitting large volumes of data between the lens and the camera including information for: focus, zoom, aperture, image stabilization settings, lens aberration, and data for digital lens optimizers (DLO). These features allow the system to achieve outstanding image resolution, and a beautiful bokeh effect with a large fully open aperture. The new control ring developed for the lenses also offer smooth operability. The RF series of lenses realizes new possibilities continuing Canon's pioneering philosophy whiles EF-mount series of lenses first pioneered.