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 on one side. Light from a scene passes through this single point and projects an inverted image on the opposite side of the box. You can easily construct this camera yourself using things lying around like match boxes or any kind of boxes, paper, duct tape etc. The small amount of light passing through this pin sized hole produces image on a photographic film or a image sensor.
If you don’t want to get your hands dirty on creating a pinhole camera by yourself, you can use your DSLR with some modifications (replacing camera lenses with a pinhole cover). Although it takes practice and lot of trial and error method to get a perfect picture, you don’t need to worry about the focus and distortions, as there are no lenses involved. You might as well end up with some lovely motion blurred photographs.
The calmness of blue
An Oceanic Ghost Forest