U.M. 1
Table Of Contents
Bright field focusing
1
You
can
start
viewing
and
focusing
before
and
after
cocking
the
rapid
wind
lever.
When
the
preview
lever
is
in
"A"
(automatic)
position,
and
themeterisat
"OFF;'
the
diaphragm
is
fully
open
except
for
the
mo-
ment
of
exposure.
2
Turn
the
distance
scale
ring
until
your
subject
image
is
clearly
in
focus.
It
is
not
always
necessary
for
you
to
view
and
focus
with
the
diaphragm
fully
open.
In
bright
sunlight,
you
can
easily
focus
with
diaphragm
closed
to
f/ 5.6
or
f/ 8,
and
still
ob-
serve
the
depth
of
field.
It
is
easier,
however,
to
focus
with
the
dia-
phragm
fully
open
as
your
subject
image
is
much
brighter.
When
the
letter
"M"
appears
be-
side
the
lever,
the
lens
is
in
manual
position
;
when
"A"
appears,
it
is
in
automatic
position.
Microprism
Honeyw
e
ll
Pentax
cameras
have
a
Fresn
el le
ns
with
a
microprism
center
undern
e
ath
th
e
ground
glass. As
you
look
through
th
e finder,
you
will s
ee
that
the
Fresnel
lens c
onsists
of
many
con
c
entri
c
rings
which
provide
the
brightest
ยท
possible
image
on
the
ground
glass.
The
microprism
is
the
center
por-
tion
of
this
diagram.
When
your
sub-
ject
is
in
focus,
the
image
in
the
micro
prism
will
be
sharp
and
perfect-
ly
clear.
If
your
subject
is
not
in
focus,
the
micro
prism
will
break
the
image
up
into
many
small
dots,
much
like
an
engraver's
screen. You
can
focus
your
subject
on
any
por-
tion
of
the
ground
glass.
11