Excerpt: I connected this to an FZ200 with a DMW-LA7 extension tube. Now it looks like I have a monster zoom camera. Really, with the tube, I have a zoom range of about 600 to 1020mm. There are now many superzoom cameras with greater range even if you count only the max magnification. However, most of them are soft at the far end (1000mm, 1200mm, 1440mm, whatever). I think the image quality at 1020mm on this combination is as sharp as that of the Canon SX50hs at a similar length.
Excerpt: I use this product to film and take pictures of lobster fishing boats from the shore. I can see easily the fishermen work on their boats from far away. I can nearly read the name of the boat written on it from 1.5 miles! Excellent value for the money.
Pros: Consistent Output, Durable, Fast / accurate auto-focus, Lightweight, Rugged, Strong Construction
Summary: I bough the DMW-LT55 to go with my Panasonic FZ200 to use for bird photography. The lens is great, giving me that extra boost of zoom and the images are clear and bright. I highly recommend it.