Chapter 4. Control Focus and Depth of Field
Incorrect focus control, limited depth of field, subject movement, and camera movement can all cause a blurry photo. Sometimes you may intend to blur a photo while other times it is an unwanted characteristic of a "not-quite-right" photo. To get the photos that you want, you need to be able to control focus and depth of field.
These two important photography variables affect each and every photo that you take. Although you need to understand how to control focus and depth of field and to understand the various tradeoffs you are faced with when making one decision over another, it is also equally important to be able to visualize the effect that you will get.
For example, you need to be able to have a good ...
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