Pentax 645 645 Manual - Page 31

Diopter, Adjustment

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DIOPTER ADJUSTMENT 1 LED LW 0 O 0 0 0 The eyepiece is equipped with a diopter adjusting ring. Accurate focusing of the viewfinder image becomes possible only with the diopter adjusting operation. 1. As illustrated, the diopter adjusting ring possesses a diopter adjusting index. Whenever the arrow indications of +and- appear at the top, it indicates that the ring is positioned at -1 dioptry. If far-sighted, rotate the diopter adjusting ring in the direction of the arrow for the + marking to the left side. However, should you be near-sighted, the diopter adjusting ring must be rotated for the - marking to the right side. It is recommended that the diopter ring adjustment be performed prior to a shooting session to fit with your visual requirements, avoiding adjustments during picture taking. 2. To adjust diopter, as illustrated, direct the camera to face a bright/plain color background; then, rotate the diopter adjusting ring to a point whereby the border-line of the microprism and matte field can be seen most clearly. Adjusting is generally made easier when the focusing screen image is blurred or out of focus. 29

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DIOPTER
ADJUSTMENT
1
LED
LW
0
The
eyepiece
is
equipped
with
a
diopter
adjusting
ring.
Accurate
focusing
of
the
viewfinder
image
becomes
possible
only
with
the
diopter
adjusting
operation.
1.
As
illustrated,
the
diopter
adjusting
ring
possesses
a
diopter
adjusting
index.
Whenever
the
arrow
indications
of
+and—
appear
at
the
top,
it
indicates
that
the
ring
is
positioned
at
—1
dioptry.
If
far-sighted,
rotate
the
diopter
adjusting
ring
in
the
direction
of
the
arrow
for
the
+
marking
to
the
left
side.
However,
should
you
be
near-sighted,
the
diopter
adjusting
ring
must
be
rotated
for
the
—
marking
to
the
right
side.
O
0
0
0
It
is
recommended
that
the
diopter
ring
adjustment
be
performed
prior
to
a
shooting
session
to
fit
with
your
visual
requirements,
avoiding
adjustments
during
picture
taking.
2.
To
adjust
diopter,
as
illustrated,
direct
the
camera
to
face
a
bright/plain
color
background;
then,
rotate
the
diopter
adjusting
ring
to
a
point
whereby
the
border
-line
of
the
microprism
and
matte
field
can
be
seen
most
clearly.
Adjusting
is
generally
made
easier
when
the
focusing
screen
image
is
blurred
or
out
of
focus.
29