Automatic Motor Zoom Control; Af Measuring Beam Control - Metz SCA 3402 M10 Manual Del Usuario

6.6 Automatic motor zoom control

On flash units with motor zoom reflector (such as
mecablitz 44 MZ-..., 54 MZ-..., 70 MZ-... and 76
MZ-5), the reflector's coverage angle is automati-
cally adapted to the focal length of the camera
lens.
After the flash unit has been switched on the auto
zoom mode is automatically selected if the camera
is on and activated by touching the shutter release.
If lenses without CPU are used (e.g. lenses for
manual focusing), the position of the reflector
must be adapted manually to the focal length
of the lens (see operating instructions for the
given flash unit).

6.7 AF measuring beam control

The AF measuring beam is activated by the came-
ra's electronic system when the ambient lighting
conditions are insufficient for automatic focusing.
The flash unit's AF beam emitter projects a striped
pattern on to the subject and the camera uses this
pattern to focus automatically. The AF beam has a
range of about 6 m to 9 m (with a 50 mm/f/1.7
standard lens). Parallax error etween lens and AF
beam emitter limits the close-up range to approx.
0.7 m – 1 m.
The AF mode „Single-AF (S)" must be set on the
camera so that the AF measuring beam can be
activated by the camera (see camera manual).
Zoom lenses with a small initial aperture may sig-
nificantly reduce the range of the AF measuring
beam.
The striped pattern of the AF measuring beam only
supports the camera's central AF sensor. When
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