Excerpt: I used this lens with the GX7 recently. We were recently on a tram ride at the SD Safari Park and because I had a young child with me I couldn't always stay focus on the right object but I was really impressed with how fast the autofocus works so I was able to get a lot of shots that I thought I would miss (granted it was outdoor and it was a very sunny day). I also used it at my child's triathlon event and it worked out great too.
Pros: Consistent Output, Easily Interchangeable, Fast / accurate auto-focus, Nice Bokeh, Strong Construction
Excerpt: I've bought this lens, and it works well on my lumix GM1, the picture quality is great and autofocus is fast. even in low light conditions this lens performs very well, no noise on pictures at ISO 3200, at ISO 6400, noise becomes visible. I recommand this lens for my friends.
Pros: Consistent Output, Easily Interchangeable, Fast / accurate auto-focus, Strong Construction
Excerpt: This is a really good lens, very close to being an "all around" lens. Not as wide on the short end as ideal, I've been surprised how useful the 45mm focal length actually is. It stays on my G6 most of the time.
Pros: Consistent Output, Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight, Rugged
Excerpt: I basically needed a lens for my father that continued to zoom past the lens that came with the camera. I am very satisfied with my purchase. Since it was a gift, I do not use it as often but my dad is very happy with his present!
Pros: Durable, Easily Interchangeable, Fast / accurate auto-focus, Lightweight
Excerpt: This is an almost excellent low cost telephoto lens. Image quality is quite good considering the price point and with proper shot discipline (tripod) sharp photos are easily obtainable. The optical stabilization works very well for times when a tripod isn't possible. All in all it's a great combination of price, weight and image quality. The only real drawback is the maximum aperture which limits low light use but the lens performs very well wide open.
Pros: Easily Interchangeable, Fast / accurate auto-focus, Lightweight
Excerpt: Works perfect with my Olympus E-PL2. The only strange thing about this lens is it turns in the opposite direction to zoom in than expected. Perhaps a difference between Olympus and Panasonic lenses?