Nikon SB 11 User Manual download pdf (Page 20)

CONTROLS IN DETAIL —continued-

Exposure Calculator Dial

For Automatic Operation

The SB-ll's exposure calculator dial helps you select the

usable range of f/stops for the speed of the film in use and

the flash-to-subject distance. On the dial, there are three

f/stops to choose from. Each f/stop determines the usable

distance range in which you can obtain the correct auto

matic exposure. The automatic shooting ranges for the

three f/stops are indicated by a set of curved color-coded

lines near the center of the dial.

If the subject distance remains the same, the wider the

aperture you select, the faster the recycling time of the

speedlight and the greater the maximum shooting dis

tance, but the less depth of field in the final photograph.

Example 1

Conversely, if you choose a small aperture, the depth of

field will be greater, but the recycling time will be longer

and the maximum shooting distance is less. Therefore, in

choosing an appropriate f/stop, you should take all these

factors—depth of field, recycling time, and maximum

shooting distance—into consideration.

The following examples explain how to use the exposure

calculator dial:

Example 1

If you are using ASA/ISO 100 film, you can shoot subjects

at distances from 0.6—9m (2—30ft) at f/4, 0.6—6.4m (2—

21ft) at f/5.6, and 0.6—4.5m (2—15ft) at f/8.

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Nikon SB 11 User Manual Page 20