How does one define the abstract? That’s a question that artists have struggled with for centuries. In its purest form, an abstract photograph's subject is often unrecognizable. The beauty derives not from the subject itself, but from its shapes, textures or colors. The work of Henry Holmes Smith is a great example of this – many of his images are mysterious studies in light. Others – like this
image on the right – focus purely on lines, shapes and patterns rather than portraying a subject as a whole...