35
9. Working with partial light output levels
Flash durations
The adjustable partial light output levels result in different flash durations (see
Technical Data, Table 1). The specified flash durations apply only to single flashes
in manual mode. With serial flashes (winder or stroboscopic mode) the last
flashes may have a longer duration. Flash duration in the auto and TTL modes
can also be shorter when the automatic exposure control switches off the flash at
an earlier moment.
Macrophotography (close-ups)
Parallax error can be compensated by tilting the main reflector downwards by
-5° or -13°. For this purpose pull the reflector completely out, and then tilt it
down.
With close-up photography it is important to ensure that a certain minimum
lighting distance is maintained to avoid overexposure.
For exposures with extremely short flash-to-subject distances, we advise you to
use small partial light output levels in manual mode, as described on page 32.
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10. Stroboscopic mode
Fig. 20: Stroboscopic mode
In this mode several flash exposures are made on the same frame. This is
particularly interesting for motion studies and for special effects (Fig. 20).
In stroboscopic mode, several flashes are fired at a certain flash frequency.
Consequently, this function is only possible with a partial light output level of
1/
4
max. or less.
For a stroboscopic exposure it is possible to select a flash frequency of 1...30 Hz
in 1 Hz increments, and a number of flashes of 2...20 in single increments.
The maximum possible partial light output level in stroboscopic mode is auto-
matically adjusted (see Technical Data, Table 5). The partial light output level can
be adjusted manually to the minimal value of 1/256 to achieve short flash durations.
The LC display indicates the distance applicable to the adjusted parameters. The
displayed distance value can be adjusted to the actual shooting distance by vary-
ing the f-stop or the partial light output level. The aperture adjusted on the flash-
gun must be transferred to the camera. The distance range can be increased by
loading a high-speed film.
Use of the stroboscopic mode is not possible when the secondary
reflector is switched on.
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