I'm looking at this lens for street shooting, but also considering the 14 and 18mm fuji lenses. But the 18 does not appear to have a focus distance scale, which I am used to having for zone focus, important for quick 'from the hip' shooting. I know the 16 is as fast (aperture) as there is and as shown here produces great out of focus backgrounds. How would you rate the 16 vs 14 for street shooting? Any opinions greatly appreciated!