Bedienungsanleitung Metz MECABLITZ 48 AF-1 digital Nikon (Seite 84 von 139) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch)

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nal flash unit or an illuminator incorporated in the camera body. The

preflash function is set on the camera (see the camera’s operating

instructions)! Second curtain synchronisation (REAR) is not possible when

the preflash function is used. There is no setting or display for this mode

on the flash unit.

12 Automatic AF measuring beam

The automatic AF measuring beam is activated in the flash unit by the camera

when the ambient lighting conditions become inadequate for automatic focu-

sing. It projects onto the subject a striped pattern that the camera can use to

focus. Depending on the camera’s activated AF sensor, the AF beam has a ran-

ge of approximately 6 m to 9 m (with a standard 1.7/50 mm lens). The maxi-

mum flash range is reached with the camera’s central AF sensor. Parallax error

between lens and AF measuring beam limits the close-up range with the AF

measuring beam to approximately 0.7 m to 1 m.

If the automatic AF measuring beam ቭ is to be activated by the camera,

the „single AF (S)“ autofocus mode must be set on the camera and the

flash unit must indicate flash readiness. Some camera models support

only the camera’s internal AF measuring beam. In this case, the automa-

tic AF measuring beam of the flash unit is not activated (as in the case of

compact cameras; see the camera’s operating instructions).

Low-speed zoom lenses can significantly curtail the range of the AF measuring

beam!

Some cameras support the AF measuring beam in the flash unit only with the

camera’s central AF sensor. If a peripheral AF sensor is selected, then the AF

measuring beam will not be activated in the flash unit!

☞

13 Triggering control (auto-flash)

On some cameras the flash will not be fired when the prevailing light is suffi-

cient for an exposure. When the camera shutter release is depressed, no flash

exposure is triggered.

In various cameras the triggering control only works in the full program mode

or „P“ program or must be activated on the camera (see camera operating

instructions).

14 Care and maintenance

Remove dust and grime with a soft dry cloth or silicon-treated cloth. Do not use

cleaning agents as these may damage the plastic parts.

14.1 Firmware updates

The flash unit’s firmware can be updated through the USB port

ቯ

and adjusted

to the technical requirements of future cameras (Firmware Update).

For more information, visit the Metz homepage at www.metz.de.

14.2 Reset

The flash unit can be reset to the factory settings when delivered. Press the

ìModeî button for ca. 5 seconds. After ca. 5 seconds „rES“ (= Reset) is shown in

the display and the flash unit is reset to the settings as delivered..

This will not affect the firmware updates for the flash unit.

14.3 Flash capacitor forming

The flash capacitor built into the flash unit undergoes physical change if the unit

is not switched on for a prolonged period. For this reason it is necessary to

switch the unit on for approximately 10 minutes at least once every three

months. The power supplied by the power source must be sufficient to cause the

flash readiness indicator to light up no more than one minute after the flash unit

is switched on.

☞

707 47 0081.A2 48AF-1Nikon/Inh. 19.09.2007 12:42 Uhr Seite 84

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