A pinhole camera is a simple camera without a lens and with a single small aperture — effectively a light-proof box with a small hole in one side. Light from a scene passes through this single point and projects an inverted image on the opposite side of the box. The human eye in bright light acts similarly, as do cameras using small apertures.
Below are examples of pinhole photography, what is interesting about this is that you can make a pinhole camera out of something as simple as a dog food can!
Also a pinhole camera (dependant on the size of the pinhole has an unlimited depth of field, which means, from right in front of the camera, to as far as the eye can see will be pinsharp!