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9. Working with partial light output levels
Partial light output levels are manually adjustable fractions of the full-power
light output.
Partial light output levels can be set in all operating modes except the TTL remote
mode. The recycling times are shorter when partial light output levels are adjusted
(see Technical Data, Table 1) instead of full-power flashes.At the same time the guide
number of the flashgun is diminished,together with the flash-to-subject distance or
flash range, because only part of the flash power is emitted.
Partial light output cannot be set for TTL remote operation.In strobos-
copic mode, the maximum possible partial light output is always
indicated.
Partial light output levels in the auto mode
Partial light output may be adjusted in the auto mode to ensure that a flash is
always triggered with serial shots (winder mode).
The actual light output level for a given flash frequency and number of flashes is
specified in Table 5 of the Technical Data.
Partial light output levels in the manual mode
Some situations make it necessary to reduce the amount of light emitted by the
flashgun because the selected flash-to-subject distance may result in an
excessively high f-number and undesired large depth of field.This is where the
partial light output level function comes to the rescue.
The partial light output levels are adjustable within very close increments. The
distance value of the flashgun can therefore be easily matched to the subject
distance if a specific aperture has to be retained. Thus,professional flash photo-
graphy is made possible in a very simple manner to deal with difficult situations
(great differences in contrast, extreme level of reflection) when the automatic
system would not produce optimal results.
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9. Working with partial light output levels
Fig. 19: Partial light output levels in the manual mode
Setting procedure for manual mode with partial light output:
• Adjust the camera in the manner described in the operating instructions.
1 Switch on the flashgun with the main switch
ቢ
.
2 Adjust the operating mode selector
ቯ
to M.
• *Press the ISO button
ቧ
and then adjust the film speed with the + or
- button
ቪ
• *Press the Zoom button
ቭ
and use the + or - button
ቪ
to adjust the zoom
value that equals the focal length of the camera lens.
3 Press the
ቤ
button.
4 Use the + or - button
ቪ
to continuously change the flashgun’s aperture until
the required aperture appears on the LC display. Now set the same aperture
on the camera.
If an SCA 3000 adapter is used,some cameras automatically transmit
the f-number. Should this be the case, the aperture on the camera
must be changed until the required f-number appears on the LC
display of the flashgun.
5 Press the P button
ቦ
, and then use the + or - button
ቪ
to continuously
change the partial light output level until the required distance appears on
the LC display.
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2
5
3
4
* must additionally be set on some cameras