Leica R9 Instructions Manual page 167

With flash illumination
A negative adjustment is always made if you
want to reduce the proportion of light from the
flash, e.g. if you only want to use it as a fill-in
flash. In such cases, the existing lighting atmos-
phere is retained and the additional flash merely
brightens dark parts of the subject or areas of
shadow in the foreground.
This compensation is effective in all camera
exposure modes, when using the flash unit's
automatic computer mode and with camera TTL
metering. In automatic program mode, this replaces
the fixed compensation of – 1
Value), which is otherwise automatically set in fill
in flash mode depending on the available light.
For more information on manual flash exposure
compensation in camera mode P, please refer to
the relevant section on p.166.
Note:
Flash exposure compensation is not effective in
metering flash mode F and manual flash mode,
where the flash is fired with a fixed output.
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/ EV (Exposure
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