E Only the background is sharply focused

This can occur when an auto-focus camera has been focused for the central zone of the picture, which happens to be the background, rather than the main subject, which is positioned off-center. A similar situation results when the AF mechanism is jammed or when the manual focus lens was set for the wrong distance (see Figure 49.5).

Fault prevention: Use AF lock for off-center subjects. With a manual lens, always set the distance for your main subject - and don't move after focusing.

Figure 49.5 Only the background is sharply focused.

Figure 49.5 Only the background is sharply focused.

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