Metz MECABLITZ 45 CL-1 NiMH - Manual (Page 37)

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2.4 Switching the flashgun on and off
The flashgun is switched on with the main switch ቩ (fig. 2). The flashgun is
permanently switched on when the switch is pushed to the top position, and
the operating light shines. Push the main switch to the bottom position to
switch off the flashgun.
3. Automatik Flash Mode
In the automatic flash mode the photosensor measures the light reflected from
the subject. The flash is cut off as soon as sufficient light has been emitted for
correct exposure.
In this manner there is no need to calculate and set a new aperture when the
distance is changed, provided that the subject remains within the indicated
automatic flash range.
The photosensor of the flashgun must be directed at the subject, regardless of
the direction at which the main reflector is pointing. The photosensor has a
measuring angle of approx. 25°, and it only measures the actual amount of
light emitted by the flashgun.
Six working apertures are available in the automatic flash mode.
Adjusting procedure for the automatic flash mode:
Example:
Flash-to-subject distance: 5 m
Film speed: ISO 100/21°
• Adjust the camera according to the manufacturer’s operating instructions.
• Switch on the flashgun with the main switch
ቩ (fig. 2).
• Turn the adjusting knob for film speed ቮ (fig. 3) until the marker is positio-
ned opposite the ISO film speed.
Under due consideration of the maximum flash range, a distance of 5 m
permits selection of the auto apertures f/8, f/5.6, f/4 and f/2.8.
• Set the selector dial to one of the auto apertures. The frame for preselection
ቭ (fig. 3) assigns the adjusted f–stop with the corresponding maximum
flash range on the distance scale. The minimum flash-to-subject distance is
approx. 10% of the maximum flash range.
• Adjust the same aperture on the flashgun and the camera.
To achieve the shortest possible depth-of-field (as required in portraiture) we
recommend an aperture of f/2.8. For group shots where there can be seve-
ral rows of people behind each other, we recommend an aperture of f/8.
• Wait for flash readiness - the green LED lights up.
The subject should be within the middle third of the distance range.
This gives the electronic control sufficient scope for compensation
should this be necessary.
There is a certain measure of overlap between the individual automatic aper-
tures. As a result of this overlap it is always possible to place the subject wit-
hin the middle third of the range.
CAUTION with zoom lenses!
Due to their design they can cause a loss of light in the order of up to
one f-stop. Furthermore, the effective aperture can also vary, depen-
ding upon the adjusted focal length. This must be compensated by
manually correcting the aperture setting on the flashgun!
4. Manual Flash Mode
In this mode the flashgun will emit its full power. The flashgun can be adap-
ted to the actual picture shooting situation by setting the corresponding aper-
ture on the camera.
If the displayed value does not coincide with the actual distance, then the
aperture and/or partial light output level have to be changed accordingly.
The decisive points for partial light output are:
• The distance to the subject
• The required aperture
• The ISO film speed
Adjusting procedure for the manual flash mode:
Example:
Flash-to-subject distance: 5 m
Film speed: ISO 100/21°
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703 47 0130-A4 45CL-1 NiMh 16.08.2007 15:15 Uhr Seite 37