Not sure this is right place to pose my question. The question sounded so basic hence I decided to post it here. Planned to rent a 200-400mm lens to take pictures of the fighter planes flypast this National Day. However the weight would be a problem if hand-held, shaky hands. However if mounted on tripod, may have problem even looking for the planes thru view finder. Any advice from those who had tried this kind of situation before? thanks!