I am looking for, well, a lightweight yet sturdy tripod to take along on hikes. I'd like it to either be able to fit in a backpack or to be attached to lumbar pack without having it stick out too much if at all. So I'd like it collapsible to something in the 12" to 18" range (at most). Heaviest combo on it would be a Canon Rebel XT with a 70-300mm USM IS lens. And I am 6'2" tall. Ideally, I'd like to spend somewhere around $100 +/-. Am I looking for something that does not exist? One tripod my local camera shop suggested is the Manfrotto 785B. Any comments? Suggestions?