ok so i have what may be a silly question but i have been researching and can't find the difinitive answer i am looking for. I have a G3 for my main :43: camera and i love to do wildlife photography especially birds act. my question is i have the 45-200mm lens now and want more range, would i be better off getting the converter and using my bigma 150-500mm lens off my nikon and using manual focus or buying the panasonic 100-300mm and having the auto focus. My concern is that without the autofocus i won't get the bird in flight photos over water ect. the 150-500mm will give me the equivalent of 1000mm but that does me no good if i can't get the shots I'm looking for. So i come to the masters of :43: for my answers.:big grin: If anyone is using either of these lens's id love to see some shots like i mentioned if you have them. Thanks in advance guys.