Chapter 4. Control Sharpness and Depth of Field
Modern cameras and lenses enable you to take very sharp photos; however, incorrect focus, limited depth of field, and subject and camera movement sometimes produce blurry, unattractive images. Although sometimes you may want to blur a photo for artistic effect, blurring is usually a symptom of a poor-quality photo.
Although you need to understand how to control sharpness in a photo, it is equally important to be able to visualize the effect that you will get from shutter speed and depth of field. For example, you should know how depth of field is affected when you change the aperture setting from f/4 to f/8. One nice feature of digital photography is that EXIF data — information including the shutter ...
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