https://www.cameralabs.com/canon-eos-r-review/
A pretty comprehensive review, echoing most of the pros and cons reviewed elsewhere but in far more depth. But, it has one of the first detailed assessments of its AF. The worst feature is the lack of live feedback in AI Servo. It means that it is pretty hopeless for erratic fast moving subjects like birds in flight as you are looking at the previous position and not the present one. It has much better AF with "adapted" EF lenses than the Sony A7III with the same lens. Definitely a step down from the 5DIV for my needs for a body for a telephoto lens for nature and action photography.
A pretty comprehensive review, echoing most of the pros and cons reviewed elsewhere but in far more depth. But, it has one of the first detailed assessments of its AF. The worst feature is the lack of live feedback in AI Servo. It means that it is pretty hopeless for erratic fast moving subjects like birds in flight as you are looking at the previous position and not the present one. It has much better AF with "adapted" EF lenses than the Sony A7III with the same lens. Definitely a step down from the 5DIV for my needs for a body for a telephoto lens for nature and action photography.