Photography functions- There are many uses for photography, it can be used to record history and science, for self-expression or art, and it can even be used commercially.

Photography as an art form- Photography can be used as a form of art, telling stories through images through the use of lighting, composition and even the subject itself. It can also been used in collages or with editing to further an intended idea.

Photography as a science- Photography can also be used scientifically, to record discoveries and share them with other specialists around the world. It can be used as evidence or simply to document a new discovery. It can also be used to look back on history, and find out more from a certain point in time.

The difference between the study of photography and the practice of photography- There is a difference between the study and the practice of photography, studying photography teaches the pure hypotheticals of how things like cameras or lighting works. However the practice of photography teaches things studying cannot, using past mistakes to learn lessons and a chance to try new things.