Close-Ups / Macrophotography; Flash Synchronisation; Normal Synchronisation (Fig 7)); Second-Curtain Synchronisation (Rear Mode) (Fig. 11) - Metz MECABLITZ 44 AF-4 Olympus Bedienungsanleitung

For this siituation the reflector is turned in such a manner that the flash is
bounced off a suitable reflective surface (e.g. ceiling or wall of the room).
The reflector can be turned vertically up to 90°. Press the pushbutton
(Fig.2) to unlock and turn the reflector head.
When turning the reflector vertically it is essential to ensure that it is moved
by a sufficiently wide angle so that direct light can no longer fall on the sub-
ject. Consequently, always turn the reflector at least to the 60° lock-in posi-
tion. The distance readings will disappear. The flash-to-subject distance via
the ceiling or wall is now an unknown magnitude.
The light bounced off the reflecting surfaces produces a soft and uniform illu-
mination of the subject. The reflecting surface must be white or have a neu-
tral colour, and it must not be structured (e.g. wooden beams in a ceiling) as
this might cause shadows. For colour effects just select the reflective surface
in the desired colour.
Take into account that the maximum flash range is considerably dimi-
nished when bouncing the flash. The following rule of thumb will help
you determine the maximum flash range for a room of normal height:
guide number
Maximum flash range = — — — — — — — — — — — — — — —
lighting distance x 2

5.5.2 Close-ups / Macrophotography

The reflector can be swivelled down by an angle of –7° to compensate for
parallax error. For this purpose depress the reflector's unlocking button
(Fig.2) and fold down the reflector.
For close-ups it is necessary to ensure that certain minimum lighting distances
are maintained to avoid overexposure.
The minimum lighting distance is approx. 10 per cent of the maximum
flash range indicated by the LC display. Since the maximum flash ran-
ge is not given by the LC display when the reflector is swivelled down,
be guided by the maximum flash range indicated by the flash unit
when the reflector is in its normal position.

5.6 Flash synchronisation

5.6.1 Normal synchronisation (Fig 10))
In normal synchronisation the flash unit is triggered at the beginning of the
exposure time (1st curtain synchronisation). Normal synchronisation is the
standard mode on all cameras and is suitable for most flash shots.
Depending upon the given mode, the camera is changed over to flash sync
speed, the customary one being between 1/30th sec. and 1/125th sec (see
operating instructions of the camera). No settings have to be made on the
flash unit nor is there any display for this mode.

5.6.2 Second-curtain synchronisation (REAR mode) (Fig. 11)

Some cameras offer the facility of second-curtain synchronisation (REAR
mode, 2nd curtain or. SLOW2) triggering the flash unit by the end of the
exposure time. Second-curtain synchronisation is particularly advantageous
when using slow shutter speeds (slower than e.g. 1/30 sec.) or when shoo-
ting moving objects that have their own source of light.
Second-curtain sychronisation gives a more realistic impression of movement
because the light streaks behind the light source instead of building up in
front of it, as is the case when the flash is synchronised with the 1st shutter
curtain. Depending on its operating mode, the camera uses shutter speeds
slower than its sync speed.
Second curtain synchronisation is set on the camera (see operating instruc-
tions of the camera). The flash unit does not indicate this mode.
On some cameras the REAR function is not possible in certain operating
modes (e.g. specific „Scene" modes or Red Eye Reduction, see 6.7). In such
an instance, the REAR mode cannot be selected or the REAR function is auto-
matically cancelled or ignored. Please refer to the operating instructions for
the given camera.
Always use a tripod to avoid camera shake with slow shutter speeds.
Do not forget to switch off this function after exposure, otherwise
unintended slow shutter speeds will continue to be used for „normal"
flash shots.
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