I will be taking a trip to NYC this summer & I bought your cheat cards; they have been a big help! I was just wondering which lens (18-55mm or 55-200mm) would be the best to keep on the whole trip so I don't have to interchange them constantly? What would be the best settings to leave it on for great pictures of architecture, people, the skyline, and indoor shops? I'm hoping not to leave it on automatic. Would you have any suggestions on keeping my camera safe so I don't damage it while having it out all day?