Slow Synchronisation (Slow); Preflash Function For Red-Eye Reduction; Automatic Af Measuring Beam; Triggering Control (Auto-Flash) - Metz MECABLITZ 48 AF-1 digital Manual De Instrucciones

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speeds slower than its sync speed.
On some cameras the REAR function is not possible in certain operating modes
(e.g., certain vari- or subject programs, or with red eye reduction). In these
cases, the REAR mode cannot be selected and/or is automatically cancelled or
ignored (see camera's operating instructions).
The REAR mode is set on the camera (see camera's operating instructions). There
is no display for REAR mode in the flash unit.

11.4 Slow synchronisation (SLOW)

A slow exposure (SLOW) gives added prominence to the image background at
lower ambient light levels. This is achieved by adjusting the shutter speed to the
ambient light. Accordingly, shutter speeds that are slower than the flash sync
speed (e.g., shutter speeds up to 30 sec.) are automatically adjusted by the
camera. Slow synchronisation is activated automatically on some camera models
in connection with certain camera programs (e.g., a night shot program, etc.), or
it can be set on the camera (see the camera's operating instructions). No settings
are necessary on the flash unit, nor is there any display for this mode.
Slow synchronisation SLOW is set on the camera (see camera's operating
instructions)! Use a tripod when shooting with slow shutter speeds to avo-
id blurred images!

11.5 Preflash function for red-eye reduction

Various cameras offer the possibility to activate a preflash for red-eye reduction.
This function only supports the flash unit integrated in the camera. It does not
support external flash units

12 Automatic AF measuring beam

The automatic AF measuring beam is activated in the flash unit by the camera
when the ambient lighting conditions become inadequate for automatic focusing.
It projects onto the subject a striped pattern that the camera can use to focus.
Depending on the camera's activated AF sensor, the AF beam has a range of
approximately 6 m to 9 m (with a standard 1.7/50 mm lens). The maximum
flash range is reached with the camera's central AF sensor. Parallax error bet-
ween lens and AF measuring beam limits the close-up range with the AF measu-
ring beam to approximately 0.7 m to 1 m.
If the automatic AF measuring beam
the „single AF (S)" autofocus mode must be set on the camera and the
flash unit must indicate flash readiness. Some camera models support
only the camera's internal AF measuring beam. In this case, the automatic
AF measuring beam of the flash unit is not activated (as in the case of
compact cameras; see the camera's operating instructions).
Low-speed zoom lenses can significantly curtail the range of the AF measuring
beam!
Some cameras support the AF measuring beam in the flash unit only with the
camera's central AF sensor. If a peripheral AF sensor is selected, then the
AF measuring beam will not be activated in the flash unit!

13 Triggering control (auto-flash)

The camera prevents the triggering of a flash if the ambient light level is sufficient
for an exposure in the normal mode. The exposure is then completed with the
shutter speed given in the display or viewfinder of the camera. The triggering
control is activated when the flash-ready signal in the camera's viewfinder is
extinguished. In this event no flash is fired when the camera's shutter is tripped.
On various cameras the triggering control only works in the Program "P" Mode
and in the Shutter Priority Mode "S" (see operating instructions for the camera).
The triggering control can be deactivated on some camera models: To do so,
press and hold down the flash button
camera manual). The flash-ready signal will again be displayed in the camera's
viewfinder when the shutter release is lightly touched. The camera selects a suita-
ble shutter speed/aperture combination and a flash is fired when a picture is
shot.
is to be activated by the camera,
on the camera during shooting (see
75

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