Understanding Exposure, Fourth Edition by Bryan Peterson breaks down the fundamentals of exposure in an intuitive and engaging way. The book focuses on the three pillars of exposure, aperture, shutter speed, and ISO and shows how they interact to affect brightness,depth of field, motion blur, and image quality.Through clear explanations, diagrams, and example photographs, Peterson illustrates how photographers can make intentional choices rather than relying on automatic camera settings. Beyond technical mastery, the book emphasizes creative decision-making, showing how exposure can be used as a storytelling tool to convey mood, texture,and emphasis.Whether you are a beginner learning the basics or an experienced photographer seeking to refine your craft, Understanding Exposure is both a practical manual and an inspirational guide, empowering photographers to capture images with precision, creativity, and vision.