Metz MECABLITZ 48 AF-1 digital Sony - Manual (Page 69)

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shown in the display. High-speed synchronisation can be deleted by repeated-
ly pressing the „Mode“ button until the „HSS“ symbol disappears.
8 Manual flash exposure correction
The auto flash exposure mode of most cameras is adjusted to a reflection factor
of 25% (the average reflection factor of flash subjects). A dark background that
absorbs much of the light or a highly reflective bright background (backlit shots,
for example) may result in, respectively, underexposure or overexposure of the
subject.
To offset these effects, the flash exposure can be adjusted manually for the shot
with a correction value. The extent of the correction depends on the contrast bet-
ween the subject and background!
Tip:
Dark subject against light background: positive correction factor. Light subject
against dark background: negative correction factor. The setting of the correction
value is carried out on the camera (see camera operating instructions). No speci-
al indicator appears on the flash unit.
Exposure correction by means of alteration of the lens aperture setting is
impossible, since the camera’s automatic exposure program regards the
altered aperture setting as the normal working aperture setting. When
setting the correction factor, the distance shown in the display can change
and be adjusted to the correction factor (depending on the camera
model)!
After the shot, remember to cancel the TTL flash exposure correction in the
camera!
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9 Special functions („Select“)
Depending on the camera model, various special functions are available. For
this purpose, data exchange must first occur between the flash unit and camera
to access and set the special functions, for example by tapping the shutter
release. Accessing the individual special functions is achieved with the button
„Select“, that is to say, the buttons ( - ) or ( + ) must be pressed simultaneously.
The accompanying special functions and settings desired are then carried out
individually with the button ( - ) or ( + ).
The setting must occur immediately after accessing the special functions
since otherwise the flash unit automatically switches back to normal flash
operation after a few seconds!
9.1 Motor zoom main reflector („Zoom“)
The motor zoom main reflector ቫ of the flash unit can illuminate lens angles
from 24 mm (35 mm format): Thanks to the use of the integrated wide-angle dif-
fuser ቩ, the illumination widens to 18 mm.
Auto zoom
The zoom position of the main reflector ቫ is automatically adjusted to the lens focal
length when the flash unit is used with a camera that transmits the data related to
the lens focal length. After the flash unit has been switched on, „Zoom“ and the cur-
rent zoom position of the main reflector ቫ are shown in the display.
Automatic adjustment occurs for lens focal lengths from 24 mm. If a focal length
of less than 24 mm is used, „24“ flashes in the display as a warning that the shot
cannot be completely lit.
If so desired, the position of the main reflector ቫ can be manually adjusted in
order to achieve particular lighting effects (such as spot effect etc.).
Manual zoom mode
The zoom position of the main reflector must be adjusted manually to the lens
focal length when used with a camera that doesnít transmit the data related to
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707 47 0151.A4 48 AF-1Sony 30.03.2010 10:36 Uhr Seite 69