Pentax 645 645 Manual - Page 42

Aperture, Priority

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APERTURE-PRIORITY AE MODE 1 • I /Lt. PHOTOGRAPHIC MODES WITH THE APERTURE SET AT APPROPRIATE f/STOPS • • 1.7 ft Aperture-Priority AE mode Metered manual mode 60 (1/60 sec., fixed) B (Bulb) 40 Aperture-priority AE The Aperture-priority AE control is possible by adjusting the aperture ring to any of the f/stops other than the "A" position. This method requires the presetting of the desired f/stop; depending upon the subject brightness, the shutter speed is automatically controlled for proper exposure. 1. In the Aperture -priority AE mode with the Vstop presetted (not displayed), the external LCD window will indicate "Auto" and "F- -". To effect a switchover to this mode from another, depress the selecting button ("down") while also depressing the mode button, to allow the LCD of this mode to appear within the window.

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APERTURE
-PRIORITY
AE
MODE
1
• I
PHOTOGRAPHIC
MODES
WITH
THE
APERTURE
SET
AT
APPROPRIATE
f/STOPS
Aperture
-Priority
AE
mode
Metered
manual
mode
60
(1/60
sec.,
fixed)
B
(Bulb)
•
•
ft
/Lt.
1.7
Aperture
-priority
AE
The
Aperture
-priority
AE
control
is
possible
by
adjusting
the
aperture
ring
to
any
of
the
f/stops
other
than
the
"A"
position.
This
method
requires
the
presetting
of
the
desired
f/stop;
depending
upon
the
subject
brightness,
the
shutter
speed
is
automatically
controlled
for
proper
exposure.
1.
In
the
Aperture
-priority
AE
mode
with
the
Vstop
presetted
(not
displayed),
the
external
LCD
window
will
indicate
"Auto"
and
"F-
-".
To
effect
a
switchover
to
this
mode
from
another,
depress
the
selecting
button
("down")
while
also
depressing
the
mode
button,
to
allow
the
LCD
of
this
mode
to
appear
within
the
window.
40