As described in Chapter 6, the skeleton is divided into axial and appendicular portions (see Figures 6.1 and 7.1). The axial skeleton is structured from 80 bones segregated intothree major regions: the skull, vertebral column, and thoraciccage (Figure 7.1) . This part of the skeleton (1) forms the lon-gitudinal axis of the body, (2) supports the head, neck, and Chapter 7 The Skeleton 199 7 Figure 7.1 The human skeleton.
Above: Some cameras have a switch to set it to auto or manual focus. Manual focus, meanwhile, disables autofocus and enables you to adjust it yourself. This is useful when the focusing system can't find focus for whatever reason, such as when it's too dark or when there's little contrast in the scene.
Single-Shot AF (Auto Focus) mode is perfect for shooting portraits. When using Single-Shot AF Mode, select a Single Auto Focus point. For example, for portrait shots, focusing closer to the subjectâs eyes works best. When focusing on the target point, you may use either Center or Off-Center settings. This way you will get sharp focus. One of the most difficult portrait shots is a moving subject.