Canon T 90 - Manual (Page 161)

4. Second Curtain Synchronization
With the focal plane shutter, flash synchroni­
zation is made when the first shutter curtain
is fully open. With the combination of the
Speedlite 300TL, however, it is also possible
to make the flash synchronization just before
the second shutter curtain starts running.
In addition, the "P" position at which even begin­
ners can enjoy advanced techniques such as fill-
in flash, without fear of failure, is provided.
Manual flash photography is also possible in the
Manual Hi mode with a guide number of 30 (ISO
1CX)'m) and in the Manual Lo mode with that of
7.5 (ISO 100*m). Aside from exposure control,
the Speedlite 300TL offers several other fea­
tures. One is bounce flash. Another feature is the
built-in zoom of its flash head, which can use
flash energy more efficiently. One of its safety
features is the SE (Save-energy) function which
prevents unnecessary consumption of battery
energy if you forget to turn off the flash. The
Canon Speedlite 300TL is thus a high-perfor­
mance, automatic, electronic flash unit.
When using multiple flash accessories such as the
TTL Hot Shoe Adapter, the TTL Distributor and the
Off-camera Shoe Adapter with the Speedlite 300TL,
automatic TTL multiple flash photography Is possi­
ble with up to four flash units (— p 101)