44
because the focal length of the lens is
shorter than 35mm.
Flashes rapidly prior to picture
shooting:
With the selected focal length (e.g.
wide-angle lens), the current reflector
position of the mecablitz does not per-
mit to illuminate the picture right out to
the edges (danger of vignetting). This
may be the case when the reflector
position (mm) is larger than the focal
length of the lens.
7.4 Information in the LC display
The cameras transmit the ISO sensitivity, the focal
length (mm), f-stop and exposure correction to the
mecablitz which automatically adapts its settings
accordingly. It calculates the maximum flash
range on the basis of its guide number and the
transmitted values. Flash mode, maximum flash
range, aperture and zoom reflector position are
all indicated in the mecablitz LC display.
If the mecablitz operates without having received
data from the camera (e.g. when the camera is
switched off), then only the selected flash mode,
the reflector position and „
M.Zoom
“ are indicated
(Fig. 17). Aperture and maximum flash range are
only displayed if the camera transmits the corre-
sponding data to the mecablitz.
7.4.1 Maximum flash range indication in
TTL flash mode (Fig. 18)
The mecablitz LC display indicates the maximum
flash range. The indicated value relates to a factor
of 25% of light reflection by the subject, which
applies to most photographic situations. Pro-
nounced deviations from this reflection factor, e.g.
highly reflective or poorly reflecting objects, can
influence the maximum flash range of the meca-
blitz.
Always observe the maximum flash range indi-
cated by the mecablitz LC display. The subject
should be within approx. 40% and 70% of the
indicated value. This gives the electronic circuit
sufficient scope for compensation. To avoid over-
exposure, the minimum flash-to-subject distance
should not be less than 10% of the indicated
value. Adaptation to the given photographic
situation is possible by changing the aperture set-
ting on the lens.
mecablitz and camera functions
Funzioni del mecablitz e della camera
mecablitz y funciones de la cámara
Fig. 17 / Grabado 17
TTL
M. Zoom
mm
Fig. 18 / Grabado 18
TTL
Auto Zoom
mm
m
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