Metz Mecablitz 54 MZ-3 - Manual (Page 82)

14. Manual flash exposure correcction
The automatic exposure system of the mecablitz and
most cameras is based on a subject reflection factor of
25% (average reflection of subjects shot with flash). A
dark background that absorbs a great deal of light, or a
highly reflective bright background (e.g. when shooting
against the light), can result in overexposure or underex-
posure.
To compensate for the aforementioned effect, the expo-
sure can be manually corrected with a correction value
adapted to the given photographic situation. This correc-
tion value depends on the contrast between subject and
background! In the TTL and A mode of the mecablitz,
manual flash exposure correction factors of -3 EV to +3
EV (f-stops) can be set in one-third increments. Many
cameras have a setting element for exposure corrections
which can also be used in the TTL flash mode.
Please refer to the explanations in the operating instruc-
tions for the given camera and the SCA adapter.
Exposure correction by changing the aperture on the
lens is not possible in this instance because the came-
ra’s automatic exposure system will regard the changed
aperture as the normal working aperture.
Dark subject in front of a bright background:
Positive correction value (approx. 1 to 2 f-stops
EV)
Bright subject in front of a dark background:
Negative correction value (approx. -1 to -2
f-stops EV)
The entering of a correction value may result in a change
of the maximum flash range indicated on the LC display
of the mecablitz and its adaptation to the correction
value (depending upon the camera type and SCA adapter)!
Setting manual flash exposure correction:
• The mecablitz is operating in TTL flash mode or in A
flash mode.
• Turn the setting disk until the „EV“ symbol appears on
the LC display. The arrow symbol alongside „EV“ indi-
cates that a position has been reached where you can
enter a correction value.
• Press the setting disk in the direction of the arrow. The
arrow symbol alongside „EV“ starts to flash.
• Turn the setting disk to set a suitable correction value.
The correction value is shown on the LC display of the
mecablitz.
• Press the setting disk in the direction of the arrow for
storage. The selected value is automatically stored
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Exposure corrections
Compensazione dell‘esposizione manuale
Correcciones de exposición
700 47 0078-A4 PDF GB-I-E 30.09.2008 14:12 Uhr Seite 82