camera type) prior to shutter operation, which are
followed by the main flash. These preflashes in-
duce the pupils to close down, thereby diminishing
the red-eye effect.
The preflash function is set on the camera. An acti-
vated preflash function is indicated on the came-
ra’s LC display by a corresponding symbol (see
operating instructions of the camera). There is no
setting made on the flash unit, nor an information
given on the flash unit’s display.
The preflash function for red-eye reduction is
only possible with cameras that support this
mode!
On some cameras, the preflash function only
supports the camera’s internal flash unit or
an illuminator incorporated in the camera
body (see operating instructions of the came-
ra). In this case the flash unit will not fire any
preflashes (see operating instructions of the
camera).
With some cameras, the preflash function is
not possible if 2nd curtain synchronisation
(REAR) is set.
5.9 AUTO-FLASH / Triggering control
If the ambient light is sufficient for an exposure in
normal mode, then the camera will prevent the
flash unit from firing flashes. Accordingly, no flash
is triggered when the camera’s shutter release is
pressed. On various cameras, the triggering con-
trol only works in the Full Auto Mode or Program
“P”, or it must be activated on the camera (see
operating instructions of the camera).
6. Special functions
6.1 Deactivating the AF measuring beam
The AF measuring beam of the flash units 28 AF-3 C,
28 AF-3 M und 28 AF-3 N can be deactivated if this
is required:
• Switch off the flash unit.
• Keep the “MODE” key and the manual firing
button depressed.
• Switch on the flash unit.
• “AF / - -” is indicated on the display.
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