If you switch from a Canon single-lens reflex to the EOS R mirrorless camera, you can continue to use your current lens collection thanks to the 2 included adapters. The Control Ring Mount Adapter has an extra control ring, which allows you to adjust the settings, like the aperture, the shutter speed, and the ISO value. You can feel a click if you change the settings every half or third stop. In order to record smooth video images, you can disable the click. There's no loss of image quality, because the control ring supports image stabilization and the autofocus of the EF(S) lenses. Thanks to the large sensor, you can take photos and record videos with a lot of details. The camera has a fast and accurate autofocus, which allows you to focus on your subject fast.