MikeWa wrote in post #17419271
Agreed. It knows the distance to what it focused on. But I do not think it knows the distance to everything in the frame. So I don't think it always focuses on the nearest object when in automatic point selection. I don't see where I am wrong with this. Although I have been told I am.
I don't know either how the camera does it, but I surmise it must be checking focus with all active AF points. It must pick up lens extension data during the focus sweep for each point and retain that data. Seems amazing, but I don't see how else it could work.
Canon says the nearest object will be selected, and I can confirm that's what it does from my shooting experience.