Abstract photography
In most cases, photography is about taking pictures of objects or scenes that can directly be recognised. This is done as a way to document things, or to do a portrait, for example.  Abstract photography focuses on details, or on the way light is used. As a result, the object that is photographed can no longer be recognised easily. An abstract photograph often only  shows a part of a natural scene. The viewer no longer has information about the context. That way, it may create a view that looks unreal. Very often  color, light, shadow, texture, shape or form are used  to give a feeling, sensation or impression.