If things change I will update this thread. When I first had a 100-400 it had an internal failure at about 11 months, Panasonic exchanged it and I sang their praises. I now wonder if they exchanged because they don't repair lenses. Ok if it fails within the 12 month warranty period but what about at 13 months and what about if you have an accident with it? Here are links to two more threads that make me disgusted with Panasonic and the lack of support, please read them and then make your own informed decision. https://www.mu-43.com/threads/panasonic-repair-service-woes.97917/#post-1144865 http://e-group.uk.net/forum/showthread.php?t=47481 This is not me spitting my dummy out about any treatment Ihave received its a warning as to the support or lack of support policy from Panasonic.