Here are 3 iPhone (horizontal) photos I took at the Mountain, from the top of West Run, last week. I took the middle shot first -- you can see how it doesn't convey the reality of Mt. Mansfield's presence. So I shifted left for another shot; then, I shifted right for one more.
Then, I used the iPhone App, Autostitch, to create a panoramic photo. From my iPhone's Camera Roll, I selected the 3 photos above, and pressed "Stitch." In seconds, it produced this panoramic photo: