Form - Definitions

In Art and Photography, Form is one of the seven formal elements. A forms defined simply as a three dimensional shape. However, in a broader sense, form is a piece's visible elements and how they unite.
Certain forms could create certain emotions from a photograph, for example, a form with sharp, jagged adages could create a sense of tension and hostility. On the other hand, forms with less edges and a lower amount of edges could be more inviting and friendly than those with lots of sharp edges.