In order to control the intensity of the main flash
the camera's electronic system establishes the
required guide number or necessary partial light
ouput by evaluating the metering preflashes.
In TTL flash control any lens attachments or filters
are taken into account during exposure. The TTL
flash mode is supported by all camera modes
such as program P, A, S, and M.
The TTL flash mode is set on the flash unit (see
the individual operating instructions).
The TTL flash mode of Olympus digital came-
ras must not be mistaken for the conventional
TTL flash control of analog cameras! We re-
commend not to activate the secondary re-
flector of the flash unit (e.g. with 45 CL-4,
50 MZ-5, 54 MZ-..., 70 MZ-5) when in TTL
flash mode with Olympus digital cameras.
Note for Group A:
For system reasons the TTL flash mode is
currently only fully supported by the 44 MZ-2
(as of software version 2.0), 45 CL-4 digi, 54
MZ-4i and the 76 MZ-5 digi.
The flash units 70 MZ-..., 54 MZ-3, 54 MZ-4
and 44 MZ-2 (software version 1.x) support
the TTL flash mode with the E-1, E-300, E-330,
E-500 only to a limited extent. Consequently,
TTL flash mode with these flash units is only
conditionally recommended! A software upda-
te can be carried out for the 44 MZ-2. The
software status is called as follows: Press and
hold the "Mode" key and simultaneously
switch on the flash unit by its main switch.
The display will then indicate the flash unit's
software version. The TTL flash mode of the
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