if you put the ring in the MF position, set your distance, then push it back to AF and focus, it remembers the MF position. This means you can pull focus instantly between any two distances simply by pulling the ring backwards! Better still, the distance is held regardless of the zoom setting.
this is very useful for focus pulling in video mode!
image stabiliser is on the Olympus and the newer Panasonic cameras
internal focus
“ZERO” lens coating
linear CD-AF motor
MSC silent AF mechanism
7 circular diaphragm blades
58mm filter thread
close focus 0.12m giving a maximum magnification ratio of 0.5x (35mm equivalent) across the whole zoom range