Not sure if I'm gonna get slapped on the wrist again for making this a separate thread. But here we go.
I just want to know which m43 lenses have linear focusing rings? As you may know, most mirrorless camera lenses use fly-by-wire focus systems, which means when you try to focus manually, the change in focus can depend on the speed at which you turn the ring. A linear focus ring would be one where the change in focus doesn't vary by how fast you rotate the ring.