Metz MECABLITZ 50 AF-1 digital Pentax User Manual
Page 94
94
ķ
Automatic TTL and P-TTL Fill-in flash mode
The automatic TTL or P-TTL fill-in flash mode is activated by most cameras when
the automatic programme P is selected and by Vari or subject programmes
during daylight (see camera operating manual).
Fill-in flash mode overcomes troublesome shadows and produces a more balan-
ced exposure between subject and background with contre-jour shots. The
camera’s computer-controlled metering system sets the most suitable combina-
tion of shutter speed, aperture and flash output.
Ensure that the contre-jour light source does not shine directly into the
lens, as this will interfere with the camera’s TTL metering system!
There is no setting or display for automatic TTL fill-in flash in the flash unit.
7.2 Manual flash mode
In the manual flash mode
, the flash unit emits the full uncontrolled amount
of light if no partial light output has been selected. The specific photographic
situation can be taken into account by adjusting the aperture setting or by selec-
ting a suitable manual partial light setting. The setting area ranges from P 1/1
(maximum light output) to P 1/128. The display shows the distance at which the
subject is correctly lit (see 5.2).
Setting procedure
• Press „Mode“
ባ until „
“ flashes in the
display.
The setting takes effect immediately. After
about 5 seconds the display stops flashing
and the setting is saved automatically.
„
“ appears in the display.
M
M
M
☞
Manual partial light output levels
In manual flash mode
set the partial light
output desired with the buttons + and —.
The setting takes effect immediately and is
saved automatically. The distance display is adjusted
to the partial light output automatically
(see 5.2).
Various camera models support the manual flash mode
only in the
camera mode manual M! In other camera models an error message
appears in the display and the release is locked!
7.3 Automatic high-speed synchronisation (FP or HSS)
Various cameras support automatic FP high-speed synchronisation (see the
camera’s operating instructions). This flash mode makes it possible to use a flash
unit even with shutter speeds that are faster than the flash sync speed.
Interesting results may by achieved in this mode when, for example, a wide
open aperture (e.g., f/2.0) is used to limit the depth of field in portrait shots
taken in very bright ambient light. The flash unit supports the high-speed
synchronisation in the flash modes P-TTL (P-TTL HSS).
For physical reasons, however, high-speed synchronisation significantly reduces
the number and the maximum flash range. Be sure to note, therefore, the flash
range on the display of the flash unit. High-speed synchronisation is activated
automatically if a shutter speed faster than the flash sync speed is set on the
camera, whether manually or automatically by the exposure program.
Note that in the case of high speed synchronisation the guide number of
the flash unit also depends on the shutter speed. The faster the shutter
speed, the lower the guide number! The high-speed synchronisation is
mainly used in the camera modes “Av” and “M”.
☞
M
☞
M
6,1
m
Zoom
50
mm
M
M
☛
P 1/4
3,0
m
Zoom
50
mm
M
M
☛
P1/4
709 47 0191.A3 50AF-1 Pen. 17.12.2010 13:22 Uhr Seite 94