Manual Flash Exposure Correction; Special Functions („Select"); Motor Zoom Main Reflector („Zoom") - Metz MECABLITZ 48 AF-1 digital Mode D'emploi

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!
In P-TTL flash modes (P-TTL, P-TTL-HSS) , manual flash exposure correction fac-
tors of from -3 EV (f-stops) to +3 EV (f-stops) can be adjusted on the flash unit in
one-third increments.
Tip:
Dark subject against light background: positive correction factor. Light subject
against dark background: negative correction factor.
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)!
Setting procedure
• Press button ( - ) or ( + ) until „EV" flashes. Apply the setting wished with the
buttons ( + ) and ( - ):
Set a negative correction factor with the button ( - ) or a positive one with the
button ( + ).The setting takes effect immediately. After about 5 seconds the
display stops flashing and the setting is saved automatically. After saving, „EV"
appears in the display with the correction value.
Press the button ( - ) or ( + ) until „EV" without a correction factor is shown. The
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setting takes effect immediately. After about 5 seconds the display stops flashing
and the setting is saved automatically.
Manual flash exposure correction is only possible in TTL flash mode if the
camera supports this function (consult the camera's operating instruc-
tions)! If the camera does not support this function, the adjusted correc-
tion will have no effect. If the camera does not support this function, no
corrective value can be set on the flash unit, the corrective value remains
ineffective.
For some camera models, the manual flash exposure corrections must be adju-
sted on the camera. If this is the case, no correction value will appear on the
flash unit display.
After the shot, remember to cancel the flash exposure correction!
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
from 24 mm (35 mm format): Thanks to the use of the integrated wide-angle dif-
fuser , the illumination widens to 18 mm.
of the flash unit can illuminate lens angles