Me and my bro are thinking about walking hadrians wall this summer and I was wondering if people had any recommendations for gear. I'm thinking about using my EOS 300 equiped with it's 28-80 mm lens (I know it's crap and I might have the money to buy a new and better lens before then). I'm having trouble chosing film though. Is there a big difference between Fuji Velvia 50 and Fuji Velvia 100F? Also I have a relatively crap tripod so I should probably get something better.