Attaching And Connecting The Flash Unit; The Ttl Flash Mode - Leica M7 Instructions Manual

Attaching and connecting the flash unit

When mounting a flash unit on the hotshoe of the
LEICA M7, ensure that the adapter foot of the
flash unit is fully inserted and firmly secured by
means of the tightening nut, if available. This is
especially important in the case of flash units with
additional control and signal contacts, as move-
ments of the flash unit within the adapter foot
may lead to the contact being broken and conse-
quently to malfunctions.
The coaxial contact for connecting flash units with
cord connection is located below the accessory
shoe at the back of the camera.
Note: The camera and flash unit must both be
switched off before the flash is attached.
TTL flash mode
On the LEICA M7, this mode is available with both
exposure modes, aperture priority mode and
manual setting and can be used with the LEICA
SF 20/SF 24 D and any other SCA-3000 flash units
equipped with an SCA 3502/3501 adapter. As
soon as the required quantity of light has been
emitted, the camera electronics of the LEICA M7
transmit a "stop" signal to the flash unit, which
immediately interrupts light output. This flash mode
offers the advantage that all factors influencing
exposure of the film (e.g. filters and aperture
changes) are automatically taken into account.
The LEICA M7 also transmits the film speed to the
flash unit.
If the flash unit is equipped with the appropriate
displays and if the aperture selected on the lens is
manually entered on the flash unit, it can automat-
ically adjust its range settings accordingly. The
flash unit cannot be used to influence the film
speed setting.
Note: Since the aperture selected on the LEICA M7
is not transferred to the flash, it must be set
manually on the flash unit to enable the range to
be read off on the latter, if the flash has such a
display.
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