 In 1987, Canon abandoned the FD mount in favour of the EF mount along with the EOS camera system, which uses the same concept as the T80 but with a new and incompatible mount designed around an all-electronic interface.The AL-1 marked Canon's first public foray into autofocus technology.While far from a true autofocus system, the camera acted a test for Canon engineers to evaluate phase detection for SLR cameras.