One friend I knew in college did the math and realized he could buy a really nice SLR and tripod for the cost of his textbooks one semester. He bought the camer

One friend I knew in college did the math and realized he could buy a really nice SLR and tripod for the cost of his textbooks one semester. He bought the camera, tripod, and books. Then he spent an evening each semester photographing all the pages of all the books, then returned all of the books.