August 2017
Beginner
304 pages
9h 18m
English
Content preview from Science for the Curious Photographer, 2nd Edition
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APPENDIX J All About Depth-of-Field and Hyperfocal Distance
The objectives of this appendix are the following:
1. To explain the connection between depth-of-field (DoF) and the resolution in an image.
2. To derive equations for front and back depths-of-field.
3. To introduce the concept of the hyperfocal distance.
The variables required for the DoF computation are illustrated in Figure J.1. For a lens of focal length f, an object at a distance p from the lens will be focused at a distance q behind the lens. For thick or multi-component lenses, p is measured from the first principal plane and q is measured from the second principal plane. The plane perpendicular to the optical axis at distance p is called the focal plane. Here I assume ...
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