At its widest end....
At the tele end.
I believe that a Tcon 17 will be available and as such, the maximum tele end can be up to 190mm (35mm equivalent)
The camera come with two rotating dials. One at the back and one around the lens. The one around the lens is very much like the dial in the S95.
This dial controls ISO in P mode, Aperture in A mode and Shutter speed in S mode. It also controls the Art Filters in Art mode and the scenes in Scene mode. In the M mode, the front ring controls aperture and the rear dial controls shutter speed. This is so much better than the EPL1 which has no dials at all!
In addition to the PSAM, Art, SCN modes, the XZ1 also has a candle (low light mode)