110 / Comprehensive instructions
General information on flash exposure metering
and control
The LEICA M8 determines the necessary flash power
by firing one or more pre-flashes, fractions of a sec-
ond before taking the actual picture. Immediately
after this, at the start of exposure, the main flash is
fired.
All factors that influence the exposure (such as filters
and changes to the aperture setting) are automatically
taken into account.
Compatible flash units
The following flash units, when used on the LEICA M8,
are capable of all the functions described in this man-
ual:
• The LEICA SF 24D system flash unit (order no.
14 444). With its compact size and design that
matches the camera, is particularly suitable.
Thanks to its permanently attached flash foot with
additional control and signal contacts, which in
automatic mode transfer a range of data and set-
tings, it is very easy to use.
• Flash units which satisfy the technical require-
ments for System Camera Adaption (SCA) System
3000, are fitted with the SCA-3502/3501
1
adaptor,
and which allow guide number control.
Other commercially-available flash units with standard
flash foot
2, 3
and positive center contact, and which
are fired by the center contact (X-contact, 1.21a), can
also be used. We recommend the use of modern
thyristor-controlled electronic flash units.
1
When using adaptor SCA-3502 (from version 4) the white balance
(see p. 98) can be set to automatic (A) for correct color reproduc-
tion.
2
If flash units not specially dedicated to the LEICA M8 are used,
the camera white balance will not be automatically adjusted, and
the setting should be used (see p. 98).
3
The aperture specified on the lens must be manually set on the
flash unit.
Flash measurement cells
1.21a
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