When Canon confirmed the EOS R3 recently, it highlighted specs that went toe to toe with Sony's flagship a1: 30 fps continuous burst rate, eye-controlled autofocus, a vertically integrated grip, ultra-weather-resistant body, and a sensor with much faster readout times. As such, it might seem like the EOS R3 is meant to be Canon's flagship, but that's not the case, as something even better is coming.