Canon EF-EOS R adapter R1 version (Canon adapter EF to RF) - Compatibility and purpose The EF-EOS R adapter R1 version lets Canon EF and EF-S mount lenses be mounted on Canon EOS R series cameras. It provides convenient operation and features a red dust seal with light-absorbing, dust-proof and drip-proof design. It does not support RF, EF-M, or CN-E (EF cinema) lenses. - Autofocus and aperture control Offers fast auto-focusing performance with attached EF or EF-S lenses. The actual lens aperture can be controlled directly from the camera, and the camera displays shutter speed, aperture, and ISO data for easy exposure management. - Image stabilization Built-in image stabilizer helps improve sharpness and makes handheld shooting more reliable, assisting focus accuracy in challenging conditions. - EXIF signal transmission Uses gold-plated pins to transmit EXIF data signals, enhancing transmission reliability between lens and camera. - Durability and design Red dust seal and light-absorbing design contribute to dust-proof and drip-proof performance, supporting use in varied shooting environments. - Use scenarios 1) Existing EF or EF-S lens users upgrading to EOS R series: mount and use established glass without replacing lenses, preserving focal ranges and image characteristics. 2) Travel or event photography: rely on fast AF, camera-controlled aperture, and built-in stabilization to achieve sharp results with familiar lenses. 3) On-location video or stills with exposure control: benefit from direct aperture control from the camera and reliable EXIF data transmission for workflow efficiency.