Metz MECABLITZ 44 AF-4 O, Руководство по эксплуатации

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Shutter speeds slower than the flash sync speed can be set, depending upon
the camera mode and the selected flash synchronisation (also see 5.6.2 and
5.6.3).
Various types of digital cameras do not provide automatic flash sync
speed control. They are equipped with a leaf shutter and permit the
use of flash at all shutter speeds. Should you require the full light out-
put of the flash we recommend not to use shutter speeds faster than
1/125th sec.
6.3 Information in the LC display
The cameras transmit the ISO sensitivity, the focal length of the lens (mm) and
the f-stop to the flash unit, and the flash unit then automatically adapts its set-
tings accordingly.
It calculates the maximum flash range on the basis of these values and its
own guide number. Flash mode, maximum flash range and zoom reflector
position are all indicated on the flash unit’s LC display.
If the flash unit is operated without having received any data from the
camera (e.g. when the camera is switched off), then only the selected flash
mode, the reflector position and „M.Zoom“ will be displayed.
6.3.1 Maximum flash range indication in TTL flash mode
The flash unit’s 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. Pronounced deviations from this
reflection factor, e.g. highly reflecting or poorly reflecting objects, can
influence the maximum flash range of the flash unit.
Always observe the maximum flash range indicated by the flash unit’s LC
display. The subject should be within approx. 40% to 70% of the given value.
This gives the electronic system sufficient scope for compensation.
To avoid overexposure, 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 setting on the lens.
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6.3.2 Maximum flash range indication in manual flash modes M
and MLo
The flash unit’s LC display indicates the distance to be maintained for correct
exposure of the subject. Adaptation to the given photographic situation is
achieved by changing the aperture setting on the lens and selecting either
„M“ for full light output or „MLo“ for a partial light output level (see 4.4).
6.3.3 Exceeding the display range
The flash unit can indicate a maximum range of 199 m or 199 ft. This
display range can be exceeded in the event of high ISO values (e.g. ISO
6400) and large aperture openings. This is signalled by an arrow or triangle
after the distance value.
6.3.4 Blanking out the maximum flash range display
The flash unit’s LC display does not indicate any distances when the reflector
head is swivelled up or down out of its normal position.
6.3.5 Meter – Feet changeover (m – ft)
The maximum flash range indicated by the flash unit’s LC display can be eit-
her in meters (m) or feet (ft). To change between the two, proceed in the follo-
wing manner:
• Turn off the flash unit by its main switch
(Fig.2).
• Keep the "Select" key combination depressed (= "Mode" key (Fig.1)+
"Zoom" key (Fig.2)).
• Turn on the flash unit by its main switch (Fig.2).
• Release the "Select" key combination (= "Mode" key (Fig.1)+ "Zoom"
key (Fig.2)).
• The flash range indication changes from m to ft or from ft to m.
6.4 LC display-illumination
Pressing the „Mode“ (Fig.1) or „Zoom“ key (Fig.2) will activate the
flash unit’s display illumination for approx. 10 seconds. The illumination is
switched off when a flash is triggered.
704 47 0118-A2 44 AF-4 O 16.08.2007 15:01 Uhr Seite 61