JJC EC-R1 Eyecup is specially designed for Canon EOS R1. Made of premium silicone, it is soft and comfortable, allowing even eyeglass users to use it without worrying about scratching their lenses. The ergonomic design ensures a comfortable fit between your eye and the camera. With a self-locking mounting system, the eyecup is easy to install and stays securely in place. During use, it not only protects the camera viewfinder from impact and scratches but also effectively blocks stray light from entering the viewfinder. In addition, this eyecup does not affect the function of the eye sensor or the normal use of the LCD monitor. JJC EC-R1 Eyecup is a replacement for Canon ER-I Eyecup.