Personal experience with the 14-50 Leica Vario Elmarit
Personal experience with the 14-50 Leica Vario Elmarit
Very big lens, heavy. While it adds Image Stabilization in lens, it is not as sharp, or as light, as any of the three weather sealed Olympus 4/3 lens listed.. 12-60, 30, 50.
Since it was Panasonics L-1 kit lens,(a heavy camera in it's own right) small size and light weight seemed not to be a goal. I was surprised at how much sharper the Olympus 14-54 Mk I lens was, when I got that lens. Also a good selection in the $300 used category, I might add.
All of the 4/3 lenses can be adapted to m4/3, although all may not utilize the latest focusing functions on the Micro bodies. Tricky area here, if you are aiming toward micro bodies eventually. There is a fine line of selection choices between Oly and Pana and 4/3 and m4/3. Adapting M4/3 lenses back to standard 4/3 is not possible. Adapting all sorts of legacy lenses with appropriate, but different, adaptors is possible for both 4/3 and m4/3
Personally, for my own budget, I'd buy the used Olympus 14-54 for $300. Mine outshot my used $400 plus Leica Vario Elmarit handily and weighed a lot less.