Focus.
Press the shutter button halfway to set focus and exposure. Focus and ex- posure will remain locked while the shutter button is pressed halfway (AF/AE lock).
Recompose the picture. Keeping the shutter but- ton pressed halfway, re- compose the picture.
Shoot.

Focus Lock

To compose photographs with off-center subjects:1Position the subject in the focus frame.

2

1000 F3.3

3

1000 F3.3

4

Autofocus

Although the camera boasts a high-precision autofo- cus system, it may be unable to focus on the subjects listed below. If the camera is unable to focus using autofocus, use focus lock to focus on another subject at the same distance and then recompose the pho- tograph.

Very shiny subjects such as mirrors or car bodies.Fast-moving subjects.Subjects photographed through a window or other reflective object.

Dark subjects and subjects that absorb rather than reflect light, such as hair or fur.

Insubstantial subjects, such as smoke or flame.

Subjects that show little contrast with the back- ground (for example, subjects in clothing that is the same color as the background).

Subjects positioned in front of or behind a high- contrast object that is also in the focus frame (for example, a subject photographed against a back- drop of highly contrasting elements).

34