Automatic High-Speed Synchronisation (Hss) - Metz 64 AF-1 digital Manual De Instrucciones

7.4 Automatic high-speed synchronisa-
tion (HSS)
Various cameras support automatic 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 aper-
ture (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 high-
P TTL HSS
speed synchronisation in
mode.
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 syn-
chronisation is activated automatically if a
shutter speed faster than the flash sync
speed is set on the camera, whether manual-
ly or automatically by the exposure program.
Note that in the case of high speed synchro-
nisation the guide number of the flash unit
also depends on the shutter speed.
The faster the shutter speed, the lower the
guide number!
PTTL
0.8- 9.0 m
M-
5,6
m
35
F
Zoom
m
EV
PTTL
0.8- 9.0 m
M-
5,6
m
35
Zoom F
m
flash
EV
MODE
PTTL
PTTL HSS
A
p
q
+
Setting the mode of operation
• Switch on the flash unit with the
button. The start screen appears.
Thereafter, the flash unit always switches
on with the mode of operation that was
used last (e.g. PTTL flash mode).
• Tap the shutter release to transfer data bet-
ween the flash unit and the camera.
• Press the sensor button of the displayed
mode of operation on the touch display as
many times as it takes for the display for
selecting the mode of operation to appear.
O
• Press the sensor buttons on the
touch display and select
P TTL HSS
• Press the sensor button on the
touch display.
The setting will take effect immediately.
Second curtain synchronisation (REAR) is
automatically deactivated when the flash
unit is set to high-speed synchronisation
HSS!
P TTL HSS
.
k
177