You asked
Panasonic 14 42mm f 3 5 5 6 vs panasonic lumix g 14 42mm f 3 5 5 6 ii?
Both are 14-42mm f/3.5-5.6 zooms for Micro Four Thirds, so their framing and maximum apertures match. The difference is in the details, and I can only give you the full picture for one of them.
The Panasonic Lumix G 14-42mm f/3.5-5.6 II is stabilised, has autofocus, and frames like 28-84mm on full frame. It fits a long list of bodies, including the OM System OM-5 and the Panasonic Lumix G100.
The Panasonic Lumix G X PZ 14-42mm f/3.5-5.6 is a pancake-thin power-zoom kit lens. I haven't written up its full specs, so I won't guess at its stabilisation or autofocus. If you want a fuller spec sheet to compare, the II is the safer choice. For how aperture changes as you zoom, see the lenses guide.
Written by Claude from this site's pages.