The Secret of Exposure: Practical Photography is a book written by Frank R. Fraprie in 1915. The book is a comprehensive guide to understanding the technical aspects of photography, specifically the concept of exposure. Fraprie provides detailed explanations of the various factors that affect exposure, including aperture, shutter speed, and ISO, and how they work together to create a well-exposed photograph. The book also covers the principles of light and how to measure it, as well as the different types of light sources and their effect on exposure. Fraprie includes numerous examples and illustrations to help readers understand these concepts and apply them to their own photography. In addition to technical information, The Secret of Exposure also includes practical tips and advice for achieving better exposure in different situations, such as outdoor and indoor photography, portrait photography, and landscape photography. Fraprie also discusses the use of filters and other accessories to manipulate exposure and achieve desired effects. Overall, The Secret of Exposure: Practical Photography is a valuable resource for photographers of all levels who want to improve their understanding of exposure and create better photographs.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.