Metz mecablitz M400, Руководство по эксплуатации

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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, underexpo-
sure 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 between the subject and background!
In TTL flash modes, manual flash exposure correcti-
on factors 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 came-
ra’s automatic exposure program regards the alte-
red 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 the buttons repeatedly and set an
exposure value (EV).
The setting will take effect immediately.
Manual flash exposure correction is only possible in
TTL flash mode if the camera supports this function
(consult the camera’s operating instructions)!
If the camera does not support this function, the
adjusted correction will have no effect.
For some camera models, the manual flash exposu-
re corrections must be adjusted 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 manual
flash exposure correction in the camera!
Strongly reflecting objects in the motif can have a
negative impact on the camera’s automatic exposu-
re. The photograph will be underexposed. Remove
reflecting objects or set a positive correction value.
+
+
+
EV
+1 1/3
6.9
m
ETTL
HSS