Received my Panny 100-300mm today. First impressions are a bit mixed. AF-C isn't very good at all and get many more misses than hits. Zoom is a bit 'sticky/notchy' when trying to make fine adjustments, and I can't attach a tripod plate as the lens sits lower than the body 
However, when I do manage to get a good shot IQ is reasonable and I'm sure I'll get better results when I understand the lens a bit better. Anyway, here's some test shots with its first outing (more on Flickr)
1.

P6030717 by TDG-77, on Flickr
2.

P6030736 by TDG-77, on Flickr
3.

P6030750 by TDG-77, on Flickr
4.

P6030834 by TDG-77, on Flickr
5.

P6030849 by TDG-77, on Flickr
6.

P6030853 by TDG-77, on Flickr
7.

P6030925 by TDG-77, on Flickr
8.

P6030958 by TDG-77, on Flickr
9.

P6030966 by TDG-77, on Flickr
10.

P6030992 by TDG-77, on Flickr
11.

P6031059 by TDG-77, on Flickr

However, when I do manage to get a good shot IQ is reasonable and I'm sure I'll get better results when I understand the lens a bit better. Anyway, here's some test shots with its first outing (more on Flickr)
1.

P6030717 by TDG-77, on Flickr
2.

P6030736 by TDG-77, on Flickr
3.

P6030750 by TDG-77, on Flickr
4.

P6030834 by TDG-77, on Flickr
5.

P6030849 by TDG-77, on Flickr
6.

P6030853 by TDG-77, on Flickr
7.

P6030925 by TDG-77, on Flickr
8.

P6030958 by TDG-77, on Flickr
9.

P6030966 by TDG-77, on Flickr
10.

P6030992 by TDG-77, on Flickr
11.

P6031059 by TDG-77, on Flickr
Comment