Manual Flash Exposure Correction - Metz mecablitz 52 AF-1 Pentax digital Manual De Instrucciones

7 Manual flash exposure
The auto flash exposure mode of most came-
ras is adjusted to a reflection factor of 25%
(the average reflection factor of flash sub-
jects). A dark background that absorbs much
of the light or a highly reflective bright back-
ground (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 between the subject
and background!
In TTL flash modes, manual flash exposure
correction factors of from -3 EV (f-stops) to
+3 EV (f-stops) can be adjusted on the flash
k
unit in one-third increments.
+
Tip:
Dark subject against light background: posi-
tive 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 set-
ting the correction factor, the distance shown
152
correction
in the display can change and be adjusted to
the correction factor (depending on the
camera model)!
Setting procedure
P TTL
• Press the
-7,9 m
0,7
display as many times as it takes for the
m partial light output selection to appear.
Z
35 F4.0
OOM
m
EV
INFO
-1 1/3
• Press the
-1
touch display and set a correction value.
-2/3
• Press the selected correction value on the
touch display, e.g
P TTL
The setting will take effect immediately.
-7,9 m Manual flash exposure correction is only pos-
0,7
sible in TTL flash mode if the camera sup-
m
Z
F4.0
35
OOM
m
ports this function (consult the camera's ope-
EV
INFO
-1 rating instructions)!
If the camera does not support this function,
the adjusted correction will have no effect.
For some camera models, the manual flash
exposure corrections must be adjusted on
the camera. If this is the case, no correction
value will appear on the flash unit display.
EV
sensor buttons on the touch
sensor buttons on the
-1
.