The book is divided into eight chapters, each of which examines a different aspect of visual perception and evaluation. Lopes begins by defining what he means by "picture" and distinguishing between different types of visual art, including photographs, paintings, and sculptures. He then goes on to discuss the various ways in which we perceive and interpret pictures, including the role of context, background knowledge, and culture.
One of the key insights of the book is Lopes' argument that pictures are not just passive representations of the world, but are active participants in the process of perception. He argues that pictures have their own aesthetic properties, including shape, color, and composition, which contribute to the overall aesthetic experience of the viewer.
Lopes also discusses the various ways in which we evaluate pictures, including both objective and subjective criteria. He argues that our evaluation of pictures is shaped by a complex interplay of cognitive and emotional factors, and that our aesthetic judgments are often influenced by cultural and historical context.