Pentax SF-1 SF-1 Manual - Page 48

Using, Pentax, Dedicated, Flash, Units

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USING PENTAX DEDICATED FLASH UNITS If the camera is set in an AE (automatic exposure) mode or the Metered Manual mode, a Pentax dedicated auto flash unit can be used anytime. How to Use an Accessory Flash 1. Remove the camera's hot-shoe cover and attach the flash unit. 2. Set the flash mode to TTL Auto or Programmed Auto. 3. Turn the flash's main switch on. 4. The completion of the flash-charging operation can be confirmed by checking the flash unit's flash-ready indicator, as well as the flash-ready indicator 151 in the viewfinder and the flash-sync speed display on the CENTIC panel, both of which are turned on when the shutter release button is pressed halfway down. (The indications for the RTF are slightly different.) • When the exposure meter's timer goes off, the 51 and flash-sync shutter speed indicators also switch off. • For this camera, please take advantage of the new AF400FTZ dedicated auto zoom flash, which possesses the many capabilities shown at right. Functions of RTF and Dedicated Auto Flash Units • When using an old-type flash unit (AF 160S or AF200S), use the lens aperture ring to select the desired f-number. • • The red flash-ready indicator located to the left of the viewfinder eyepiece lights up when the flash is fully charged. • The flash unit may not discharge if the subject is too bright to require a flash. • tr AF200SA, AF240Z and AF160SA apply. TTL Auto Flash System When you attach a Pentax dedicated TTL auto flash unit, the camera's metering circuits automatically control the flash output for a proper exposure by measuring the incoming light reflected off the film plane. Since this system measures only the light reflected by the subject, it ensures accurate exposure control. • 44

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USING
PENTAX
DEDICATED
FLASH
UNITS
If
the
camera
is
set
in
an
AE
(automatic
exposure)
mode
or
the
Metered
Manual
mode,
a
Pentax
dedicated
auto
flash
unit
can
be
used
anytime.
How
to
Use
an
Accessory
Flash
1.
Remove
the
camera's
hot
-shoe
cover
and
attach
the
flash
unit.
2.
Set
the
flash
mode
to
TTL
Auto
or
Programmed
Auto.
3.
Turn
the
flash's
main
switch
on.
4.
The
completion
of
the
flash
-charging
operation
can
be
confirmed
by
checking
the
flash
unit's
flash
-ready
indicator,
as
well
as
the
flash
-ready
indicator
151
in
the
viewfinder
and
the
flash
-sync
speed
display
on
the
CENTIC
panel,
both
of
which
are
turned
on
when
the
shutter
release
button
is
pressed
halfway
down.
(The
indications
for
the
RTF
are
slightly
different.)
•
When
the
exposure
meter's
timer
goes
off,
the
51
and
flash
-sync
shutter
speed
indicators
also
switch
off.
•
For
this
camera,
please
take
advantage
of
the
new
AF400FTZ
dedicated
auto
zoom
flash,
which
possesses
the
many
capabilities
shown
at
right.
Functions
of
RTF
and
Dedicated
Auto
Flash
Units
•
When
using
an
old
-type
flash
unit
(AF
160S
or
AF200S),
use
the
lens
aperture
ring
to
select
the
desired
f-number.
•
•
The
red
flash
-ready
indicator
located
to
the
left
of
the
viewfinder
eyepiece
lights
up
when
the
flash
is
fully
charged.
•
The
flash
unit
may
not
discharge
if
the
subject
is
too
bright
to
require
a
flash.
•
tr
AF200SA,
AF240Z
and
AF160SA
apply.
TTL
Auto
Flash
System
When
you
attach
a
Pentax
dedicated
TTL
auto
flash
unit,
the
camera's
metering
circuits
automatically
control
the
flash
output
for
a
proper
exposure
by
measuring
the
incoming
light
reflected
off
the
film
plane.
Since
this
system
measures
only
the
light
reflected
by
the
subject,
it
ensures
accurate
exposure
control.
•
44