Olympus Pen FT Manuel d'instructions - Page 24

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Olympus Pen FT Manuel d'instructions
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from conventional sin-
gle-
lens
reflex ca meras,
has
_
the big feature of
synchronizing
class
M
flash bulbs
and
elec-
tronic flashes
with
all
shutter speeds up to
1/
500 of a
second
_
It
assures
satisfactory re
-
sults not only in night
time
but also
in
day-
time
flash photography
_
23
1
Mount the flash
gun. In
sert
the
ac-
cessory shoe into the
grooves on both sides
of the viewfinder eye-
piece
and
mount the
gun
on the shoe.
2
Determine
the
synchronizing
contact point.
Oper-
ate the contact point
switch lever with your
fingertip
and
set the
red dot of the lever to
M (contact point) wnen
using a class M bulb
or
to X
(contact point)
when
employing
an
electronic flash.
Then
fix
the flash connection
plug into the synchro-
nizing
socket of the
camera body.
3
Determine the F·
number.
The F-
number
is
calculated
by dividing the flash
guide number by the
distance to subject. For
example, suppose the
guide
number for an
ASA rating of 100 is
40 and the distance to
subject is 5 meters,
then F-number
is
at
8
since 40+5=8.