In photography, forced perspective can be achieved by positioning objects of different sizes and distances so that they appear to be right next to each other. An example would be placing a toy car close to the camera with a car dealership in the background. If placed correctly, the toy will appear to be a full-sized car. It is also a common photographic effect to make a person appear to be touching something large that is far away. For example, holding the moon in his hand or touching the top of a tall building.
12 Impressive Perspective Illusions