Hey guys, so I've just today grabbed the Oly 17mm 1.8 (and the 45mm!) and am a bit confused by the snap focus. I'll mostly be using auto focus anyway, but it'd be nice to at least know how it works! I'm going to assume the front numbers are the aperture, and the back numbers are the focal distance, but the aperture numbers go in both directions? Not sure what I'm meant to line up where. Also, I know f8 is meant to be the 'go to' for street photography, is that the same with m4/3 or can we get away with f4 for the same DOF as f8 in full-frame. Is my understanding there correct? Sorry for the super newb questions!