The document provides instructions for an assignment to take photographs that illustrate the effect of aperture on depth of field. Students are asked to take pictures of objects at varying distances while changing the aperture from the smallest to largest f-number. This will produce images with shallow to large depths of field that can then be compared. The assignment also tasks students with researching photographers like Ansel Adams, Mona Kuhn, Richard Renaldi and Uta Barth and how they creatively used depth of field in their work.