So how does a photographer go about creating this toy-model effect? It all starts with the tilt-shift lens. When used properly, it can do what no other lens can, which is get an entire image in focus (this is done by tilting the lens).
I primarily use this lens when shooting food, jewelry or anything where I want more than one object in focus. To make the objects appear to look much smaller, I simply reverse the process, flipping the lens the other way to create a very thin area of focus. Add to that the height you gain from being in a helicopter and—voila!—you’ve got Little Vegas. – AM