The Canon EOS R3, a mirrorless camera, has been reviewed by various outlets, with some praising its speed and robust body, while others have expressed frustration with its performance. Some reviews have focused on the camera's suitability for specific uses, such as wildlife photography. There is also speculation about a potential new version of the camera, the Canon EOS R3 Mark II, although it is unclear if this is related to the current model's performance or a separate development.