Sorry to disagree with everyone recommending the widest lenses they can get. I spend a lot of time on and about the Blue Ridge Parkway and I find the 24-70 and longer are what I use most. Unless you've been there, you don't realize how much it winds about. I go as wide as the 15 on the 20D; it's generally too wide on the 5D for the areas there. Most overlooks are "walled off" by ridges on the sides, so you don't really need ultra-wide angles. If you want to see things like the Linn Cove Viaduct, you'll need a longer lens from a couple of overlooks north; around MP 300-302 IIRC. Between Blowing Rock (NC) and Grandfather Mountain there's a parallel trail, the Tanawha Trail, that pokes up above the trees in several places for looks down the Parkway.






