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FLASH MODES
AUTOMATIC (A)
▸
Switch on the flash unit
▸
Set the flash mode for TTL operation
▸
Tap the shutter button before each flash exposure to activate exposure
metering
• The viewfinder display switches to the shutter speed or light balance
value.
• The flash unit may not fire if this step is missed by pressing the
shutter button down completely and skipping these settings.
▸
Set the desired exposure mode, shutter speed and/or aperture setting
• Take note of the shortest flash sync speed, as it determines whether
a "normal" flash or an HSS flash is fired.
FLASH PHOTOGRAPHY WITH AUTOMATIC EXPOSURE
When a flash unit is used that is system-compatible with the automatic
exposure function, then the light reflected by the subject will be
measured and analyzed by a sensor integrated in the flash unit and not by
the camera. The camera's exposure modes essentially function the same
way as without flash: The flash will not fire if the flash sync speed drops
below the set value for
or
, or if a speed below the sync speed is set for
P
P
A
A
or
.
T
T
M
M
The flash output should be reduced, i.e. a flash exposure compensation of
e.g. -1 EV to -2 EV should be set in that case, because the operating
modes will already produce a regularly lit exposure with ambient light.
In system-compatible flash units, the aperture set at the lens is transmit-
ted to the flash unit and automatically used as the basis for computer
aperture. The sensitivity set in the camera and any exposure compensa-
tion set for ambient light (camera) and flash (flash unit) will be considered
for the measurement.
HSS (HIGH SPEED SYNC.)
Automatic flash activation for fast shutter speeds
A fully automated, camera-controlled linear flash mode is available in the
Leica S3 in conjunction with system-compatible flash units (see p. 47)
for all shutter speeds of the camera. It is activated by the camera
automatically if the selected or calculated shutter speed is faster than the
sync speed (≤ 1⁄125 s with focal plane shutter).
48
FLASH CONTROL
FLASH RANGE
(Selecting the sync speed/sync speed range)
The Leica S3 allows you to fine tune the shutter speed used in flash mode
in combination with the exposure modes Automatic and Aperture Priority
to the exact conditions of the subject or your own picture composition
ideas. You can choose an automatic setting or one of several manual
settings.
▸
Select
CAMERA
CAMERA
▸
Select
in the main menu
Max. Flash Sync Time
Max. Flash Sync Time
▸
In the submenu, select one of the three automatic focal length-specific
settings (
,
,
) or the desired slowest shutter speed
1/f
1/f
1/(2f)
1/(2f)
1/(4f)
1/(4f)
Note
The
setting results in the slowest shutter speeds based on the rule of
1/f
1/f
thumb for blur-free pictures taken manually, e.g. 1/60 s using the
Summarit-S 1:2.5/70 ASPH. The shutter speeds with
would in this example be 1/125 s and 1/250 s respectively.
SYNC POINT
Your Leica S3 allows you to choose the flash firing point at the start of the
exposure or the sync point at the end of the exposure.
This function is available with all flash units (including system-incompati-
ble flash units), regardless of whether they are fitted to the flash shoe or
are connected via cable, as well as for all camera and flash unit settings.
The displays are identical in both cases.
▸
Select
SETUP
SETUP
▸
Select
in the main menu
Flash Sync. Mode
Flash Sync. Mode
▸
Select the desired variant
FLASH SYNC SPEED
The flash sync speed of the Leica S3 is 1/125 s with regular flash
technology, i.e. with the camera's own focal plane shutter. All shutter
speeds up to 1⁄1000 s are available if the central shutter is used with
relevantly equipped lenses.
All faster shutter speeds are available as well when using system-compati-
ble, HSS-capable flash units.
Notes
• Specifically studio flash systems often have flash times that are
significantly longer than the sync speeds listed above. Longer times are
recommended in order to use of the light of these flash units to full
effect.
•
will light up in the viewfinder for all shutter speeds up to the sync
X
X
speed of 1⁄125 s to indicate that the standard flash mode can be used.
• If the shutter speed setting dial is raised, the preset exposure modes
may change from
to
P
P
that will then be set. The original modes will be reset once a new
and
1/(2f)
1/(2f)
1/(4f)
1/(4f)
shutter speed is provided.
• The flash unit automatically switches to HSS mode if a HSS-capable
Leica system flash unit is used and shorter shutter speeds are set on
the camera (≤ 1⁄125 s with a focal plane shutter, and ≤ 1⁄1000 s with a
central shutter).
or from
to
because of the shutter speeds
T
T
A
A
M
M
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