Metz Mecablitz 54 MZ-3 - Manual (Page 26)

Automatic flash mode with an SCA 3xx adapter
or the SCA 301 standard foot:
In this case ISO film speed, zoom reflector position and
aperture must be manually set on the mecablitz. This is
indispensable for correct flash exposure because the
mecablitz automatically controls the light on the basis of
these data.
Tip:
If you are using a zoom lens and do not constantly need
the full power and maximum flash range of the meca-
blitz, you can leave the zoom reflector at the shortest
focal length position of the zoom lens. In this manner the
entire subject will be uniformly illuminated, thereby eli-
minating the need to constantly adapt the zoom reflector
position to the given focal length.
Example:
Let us assume that you are using a 28 mm – 80 mm
zoom lens. In this case you set the zoom reflector to
position 28 mm!
The subject should be located within about 40%
and 70% of the distance range indicated on the
mecablitz LC display. This gives the electronic
system sufficient leeway for compensation.
Caution with zoom lenses!
Depending on their design, zoom lenses can
cause a loss of light in the order of up to one f-
stop. Moreover, the effective aperture may vary
with the focal length settings. This can be com-
pensated by correcting the aperture value on the
flashgun manually or by manual flash exposure
correction (see Chapter 14).
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Automatic flash mode
Modo flash Auto
Funcionamiento Automático
700 47 0078-A4 PDF GB-I-E 30.09.2008 14:12 Uhr Seite 26