Metz MECABLITZ 45 CL-4 digital BASIC_KIT - Manual (Page 58)

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Bright subject against a dark background: Set on the flash unit an f-stop that
is lower by one increment: e.g. camera aperture f/4; auto working aperture
on the flash unit f/2.8.
When an adapter from the SCA 3002 system is used in conjunction
with a corresponding camera, the correction value for flash is set on
the camera during automatic data transfer (ISO, aperture). An additio-
nal setting on the flash unit is then unnecessary!
When an adapter from the SCA 3002 system is used the manual aperture
setting has to be selected on the flash unit if a correction value cannot be set
on the camera!
11 Flash synchronisation
11.1 Normal synchronisation
With normal synchronisation the flash unit is fired at the beginning of the expo-
sure time (synchronisation with the first shutter curtain). This is the standard
mode with all cameras. A corresponding setting is therefore not necessary.
11.2 2nd curtain synchronisation
Many cameras support 2nd curtain synchronisation (rear, 2nd curtain) in
conjunction with an SCA adapter. The flash unit is fired at the end of the
exposure time for a more “natural” rendition of the exposure situation in con-
junction with slow shutter speeds (>1/30 s) and moving light sources. The
light traces in the exposure then follow the light source. The setting is made
on the camera. For further details please refer to the operating instructions
for the given camera and SCA adapter.
11.3 Slow synchronisation
Slow synchronisation can be selected on many cameras when an SCA adap-
ter is used. The camera will then adapt the shutter speed to the prevailing
ambient light conditions so that in darkness greater emphasis will be placed
on the background. The setting is made on the camera. For further details
refer to the operating instructions for the camera and SCA adapter.
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11.4 High-speed synchronisation HSS
In conjunction with an adapter from the SCA 3002 system, some cameras
will support high-speed synchronisation (HSS) for flash shots at shutter
speeds faster than the flash synch speed. For instance, HSS makes it possible
to minimize the depth-of-field in portraiture with bright ambient light by
selecting a wide open aperture to clearly contrast the portrait against the
background. HSS is supported in TTL flash mode and/or manual flash mode
M, depending on the camera model (see operating instructions for the given
camera and SCA adapter).
To set high-speed synchronisation continue depressing the “Mode” key
ቭ
until “HSS” appears in the indicator window.
12 Preflash function for red-eye reduction
The red-eye effect becomes apparent when a person is looking straight into
the camera, the ambient lighting is poor and the flash unit is located in the
immediate vicinity of the camera. Under these circumstances the pupils are
wide open so that the flash illuminates the red retina of the eyes.
One or more preflashes induce the pupils to close down, thereby reducing
the red-eye effect. This function is set on the camera (see operating instruc-
tions for the given camera and SCA adapter).
13 AF measuring beam
When using an SCA adapter from the SCA 3002 system in conjunction with
the SCA 3045
3) connecting cable (optional extra), and depending on the
given camera model, the AF measuring beam function is activated in poor
lighting conditions. A strip pattern is projected onto the subject to enable the
AF system to focus the camera lens. The distance range depends on the
speed of the lens. With a standard lens the effective range is between
approx. 0.7 m and 6 to 9 m (for further details please refer to the operating
instructions of the given camera and SCA adapter).
708 47 0026-A1 BASIC-KIT 14.10.2008 12:54 Uhr Seite 58