I asked some people about this, and they told me that they saw the whole objects before they saw the parts and didn't really focus on the details until they were interested in them. They saw the tree first, then the leaves, but went back to focusing on the whole tree. I don't know if their eyes naturally go towards the details in the physical world or if their brains prioritize other activities above that. Probably depends on interest.
I see the leaves on the trees first, then the whole tree. Or whatever the smallest discernible detail is from a distance. Sometimes, it feels like every single detail is coming in at once and none of them fade away either.
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Drain and plane and grain and blain your brain, and then again,
Propane and butane out of the gas main, your blain shall sustain!