Owner's Manual

B
Variable Aperture AE Control
Method
Commonly known
as
"
shutter
priority
EE,"
the
Variable
Aperture
AE
control
method
gives
the
photographer absolute control over
the
shutter
speed
to
prevent camera shake. You select a
shutter
speed
appropriate
to
the
action
and/or
the
lens
you
are
using, and
the
camera
automatically
ad
justs
the
aperture of
the
lens
to
precisely
the
pr
oper
f/stop
or
fraction thereof.
C
Silicon Photocell
The Silicon Photocell
is
a highly accurate
ana
extremely stable light measuring cell having a wider
range of sensitivity and much faster response
to
rapidly changing light levels
than
the
conventional
CdS cell.
At
ASA 100,
the
metering range
of
the
Silicon Photocell
is
from
EV18
(1/1000
sec.
at
f/16)
down
to
EV
-2
(8 sec.
at
f/1.4) , which
is
five
f/stops
more sensitive
than
the
normal CdS cell.
At
ASA
25
,
the range
is
from
1/1000
sec.
at
f/8
down
to
30
sec.
at
f/1.4
. This increased sensitivity range
is
made
possible by
the
development
of
a special logarithmic
amplifier
to
intensify
the
low
amount
of
current
generated by
the
photocell
in
very
dim
light
conditions.
13