EN
196
Pi
ct
ure
mo
de
LINEAR FLASH MODE (HIGH SPEED SYNCHRONIZATION)
Fully automatic, i.e. camera controlled, linear flash operation is
available with this camera when using the Leica SF 58 flash unit,
with all shutter speeds and in aperture priority and manual
exposure modes. The camera activates it automatically if the
selected or calculated shutter speed is faster than the sync speed,
i.e.
1
/
180
s. If the flash unit is set correctly, this change does not
require the photographer to do anything else.
Important:
The range for HSS flash is significantly lower than for TTL flash.
SELECTING THE SYNC SPEED / THE SYNC SPEED RANGE
Reproduction of the available light is determined by the shutter
speed and the aperture. A fixed setting to the fastest possible
shutter speed for flash operation, the sync time, leads
unnecessarily in many situations to a greater or lesser
underexposure of all parts of the subject not directly lit by the
flash.
This camera allows you to combine flash operation with the shutter
speed generated in aperture priority mode to subtly change the
lighting conditions for the relevant subject to suit your
compositional ideas. You can choose any of five ways of doing this:
Setting the function
1. In the main camera menu (see p. 154/248) select
Auto
Slow Sync
(page 1,
CAMERA
section), and
2. in the sub-menu select the automatic lens-specific setting -
1/Focal length
1
, or whether you want to specify a particular
shutter speed yourself -
Manual setting
.
3. In the
Manual setting
sub-menu, set the range of shutter
speeds permitted by specifying the fastest speed permitted.
Notes:
•
1/Focal length
results in the slowest shutter speeds based on
the rule of thumb for blur-free pictures taken from the hand, e.g.
1
/
60
s with a 50mm lens. However, in the
Auto Slow Sync.
menu
it is limited to
1
/
125
s even if the focal length used is longer.
• The setting field in the
Manual setting
sub-menu initially shows
the current slowest shutter speed setting.
• Manual exposure control also allows any shutter speed up to the
sync speed
1
/
180
s to be set.
• If the Leica SF 58 (see p. 192) is being used and faster shutter
speeds than
1
/
180
s are set on the camera,the flash unit
automatically switches to HSS mode.
1
Only when using Leica M lenses with 6-bit coding in the bayonet and lens
detection enabled in the menu.
Содержание M 240
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