Fahnestock, Robert K., 1932-, authorColorado State University, publisher2019-07-092019-07-091961-01https://hdl.handle.net/10217/195688CER61RKF6.Approved for publication by Director, U.S. Geological Survey.Includes bibliographical references (page 7).January 1961.Developments in photographic equipment have made it possible to design a wide variety of time-lapse equipment to photograph and measure geologic processes. New films, exposure controls and techniques promise better photography under diverse light conditions. Application of photogrammetry to time-lapse analysis will allow measurement of rate of change of distance, elevation, and direction.technical reportsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Photography in geologyGeology -- PhotographsChronophotographyText