I just purchased me a panasonic gh2, and i have been looking for lens all of the web from vintage to new. I am deciding on getting the panasonic 14mm 2.5 for my wide angle lens for follows. The only problem is now for a zoom lens I was going to go vintage because I can double my focus range and so on and so on, but I was wondering if I got an nikkor zoom lens would the gh2 be able to stay upright during video on a tripod. Some of these zoom lens look mighty large zoom out to their longest focal range, and the gh2 is not the heftiest camera on the market. So do I have to have a lens with a tripod collar or am I going to be fine. Would love some feedback because I am trying to dial in my new setup!