
55
FLASH DISPLAYS IN THE VIEWFINDER WITH SYSTEM
COMPATIBLE FLASH UNITS
A flash symbol (2.5a) appears in the viewfinder display on the Leica S as con-
firmation and to indicate different operating statuses.
•
does not appear despite the flash unit being turned on and ready:
In such cases, the Leica S will not fire the flash unit. (e.g. because the incorrect
mode is set on the flash unit)
•
flashes before taking the picture:
The flash unit is not yet ready to operate.
•
lights up before taking the picture:
The flash unit is ready to operate.
•
remains continuously lit after releasing the shutter:
The flash unit is still ready.
• If a ash exposure compensation is set on the ash unit, ± (2.8) appears in
the viewfinder as an indication.
FLASH USING THE FLASH UNITS OWN AUTOMATC MODE
When using system-compatible flash units in automatic exposure mode,
the quantity of light reflected by the subject is metered and evaluated by an
integrated sensor in the flash unit rather than by the camera. The exposure
modes on the camera generally function in the same way as without flash. In
or , if the flash sync speed is not reached or, in or , if the set speed is
faster than the sync speed, the flash is not fired.
As
, and modes already produce a normally exposed photograph using
the ambient light, the flash power should be reduced, i.e. a flash exposure
compensation set, e.g. –1EV to –2EV. On system-compatible flash units, the
aperture set on the lens is transmitted to the flash unit and used as a basis
for its own automatic mode. Metering takes account of the sensitivity set on
the camera and any exposure compensation set for the ambient light (cam-
era) and the flash (flash unit).
MANUAL FLASH WITH CONSTANT FLASH POWER
If the flash unit is used in manual flash mode at full power or fixed partial
power (if this can be set on the flash unit), there is no control of the flash light
quantity emitted. The exposure modes on the camera generally function in
the same way as without flash.
In
or , if the flash sync speed is not reached or, in or , if the set speed
is faster than the sync speed, the flash is not fired.
The lens aperture to be set is derived from the flash power, the sensitivity and
the distance to the subject or vice versa, the partial flash power to be set is
derived from the aperture, the sensitivity, the focal length and the distance to
the subject (see flash unit instructions).
FLASH USING THE X-CONTACT
When you connect a non-system compatible flash unit using the accessory
shoe, no information is transferred. Because the camera "cannot recognize"
the flash unit, it behaves in the same way as if no flash unit were connected.
The shutter speed should be manually set to match the flash sync speed
1
/
125
s, or
1
/
1000
s with central shutter (see p. 25), or or to slower speeds;
there is no automatic adjustment. The flash ready and control displays are
inactive.
If the flash unit is equipped accordingly, the light can be controlled using its
own automatic mode, (by means of its own sensor), or manually by selecting
the appropriate partial light power level (see flash unit instructions).
FLASH USING THE FLASH/LOWER LEMO
®
SOCKET
The flash connecting socket (1.31) or the lower LEMO
®
socket (1.34) can
be used to connect flash units and large studio flash systems using cables
with a standardized flash connector or with a LEMO
®
connector. The LEMO
®
connection has an automatic locking mechanism to reliably prevent the
connection from being inadvertently interrupted. A corresponding cable is
supplied (see p. 67)
1
.
Because the camera "cannot recognize" a flash unit connected in this way, it
behaves in the same way as if no flash unit were connected. The shutter
speed should be manually set to match the flash sync speed
1
/
125
s, or
1
/
1000
s with central shutter (see p. 21), or or to slower speeds; there is no auto-
matic adjustment. The flash ready and control displays are inactive.
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