Cool thing about experiencing this shot was that the very subtle fog/mist was rolling in with a lightly lilting breeze towards me. So the tree, I think, was essentially "catching" the fog/mist as it drifted in, which from where I was standing created this almost "super focused" effect on the tree, where the fog was cut in front of the tree, but pervaded most of the rest of the scene. It was really subtle such that I really had to take some pretty extreme care to hold the effect in processing. The Classic Chrome setting on my X100T held it, while the enhanced contrast and saturation of the Velvia setting totally destroyed it.
I really love subtle tonal variations from green to white in misty overcast weather in low contrast.