Hi all, I've got a question. How much more magnification do one get between 50mm to 70mm to 200mm and above? From what i read, for a flim slr every 100mm is about taking 9-10 yards (3 metres) nearer? (pls correct me if i'm wrong) why i'm asking this is because i need to explain to my "finance minister" the need to buy a longer lense ha.....