Asahi Optical Pentax 6x7 User manual

PENTAX
I 8X7 I
" AS - ~H I "
"P " EN . TAx :

Index
Names of parts 2
"' 4 Shoulder strap
29
Specifications 5 Resistance
to extreme temperatures
30
How to insert the battery 6
31
Battery check 7 Camera maintenance
32.33
Operating the shutter without film in the camera- 8. 9 Interchangeable lenses
34 "' 39
120 /220 film type setting
10.11 Accessories 40
"' 55
Loading the camera 12 "' 15
Finder
40
Removing the exposed film 16 Independent exposure meter
41
Shutter Release
17
Lens hood
42 . 43
Setting shutter speed 18
Filters 44.45
Setting the aperture
20
Polarization filter 46
Focusing
21
Focusing
47
Focusing Screens 22 Closeup, copying
48 "' 51
Matte type
23
Rear converter, eyecup
52
Changing lenses 24 Grip, quick focusing ring
53
Removing the viewfinder 25
Others 54
Mirror lock-up lever 26
Case , Trunk
55
Flash Synchronization
27 Second body 56
Infra-red photography
28

Names of parts
Focusing ring ------------
Focusing index -----------
Aperture <r"I" -----------
Outer bayonet mount -------...,
Push- button side lock ------.
Neck strap lug ----- ...
Shutter-speed dial
Battery check button
----.J
Battery check lamp (Shutter speed indexl
Pentaprism
_________________ .....J
Eyepiece _________________ .....J
2
L.. ________ Filter hood cap index
1- ---------- Distance scale
-------- Depth- of -field scale
------ Depth- ot -field preview lever
1- -------- Lens mount index
,...----- Push- button side lock
r------ Shutter lock lever
Exposure counter
control dial
Exposure counter
'-------- Shutter button
'--------- Rapid- wind ,ever

Names of parts
----------------------------------------
___________________ _ Exposure counter dial
,..---------------- Safety device release button
=--= = :- --------------- Pentaprism
----------'- Push- button side lock
-- ..... ---------- Flash terminals
f- ------ Accessory alignment button
--------- Back cover locking lever
-------------- Bayonet lock
--- = ---------- ___Mirror lock- up lever
------ Bayonet lock
3

Names of parts
4
!- ------------ E:xp , oslure counter control dial
___________________ Viewfinder
...... ------------ 120 / 220 film indicator
------- t-lim spool retainer knobs
-------- Tripod positioning aid
'--------- 13a ttery housing cover
:- ------------ Tripod socket

Type
Film
Picture Size
Standard Lens
Minimum Focusing
Distance
Shutter
Power Source
Battery
Check
Viewfinder
Reflex Mirror
Film Transport
Exposure
Counter
Lens Mount
Specifications
6 x 7 ideal-format Single-lens reflex.
120 roll-film (10 exposures) 220 roll-film (20 exposures)
55mm x 70mm
(2 - 1/4 "' x 2-3/4 "' )
SMC Takumar/6 x 7 105mm f/2.4, SMC Pentax/6 x7 90mm f/2.8;
fully-automatic diaphragm; 67mm filter size
1 meter (3.3
ft.)
Electronically-timed, double-curtain focal plane shutter; X, B,
1-1/ 1000 sec.
6V alkaline or silver oxide battery (Eveready
#544 or Mallory PX28)
Push
button with indicator lamp
Detachable pentaprism finder, microprism focusing screen;
produces life-size image
with standard lens
Swing-up-and-back instant return mirror
with lock-up provision
Rapid-wind lever (1800 angle); self-cocking shutter
Automatic reset exposure counter
Dual bayonet mounts: inner bayonet
for 35mm-3OOmm lenses;
outer bayonet
for 4OOmm -1000mm lenses
Flash Synchronization
FP and X terminalsl electronic flash at 1/ 30-1 sec., B
Exposure
Meter
Dimensions
Weight
Accessory pentaprism with through-the-Iens meter (TTL Pen-
taprism Finder) couples
with shutter speed and aperture
With 105mm f12.8 lens: 177mm (width)X 150mm (height)X 1 51 mm
(depth), (6. 97" X 5. 9" X 5. 94")
Body 1,290 grams (45.5 ozs.)
Standard lens SMC Pentax/6x7 90mm f12.8 485 grams
(17 .1 ozs.)
SMC Takumar/6x7 105mm f/2.4 628 grams
(22 .1ozs.)
Pentaprism housing 460 grams (16.2 ozs.)

How to insert the battery
• As the shutter is electronic, it will not
operate without a battery.
•
If the shutter is operated without a
battery the safety device will activate
and the mirror will stop partway up.
Inserting the battery
1) Lift up the crank at the bottom of the
camera case and turn
it in a coun-
terclockwise direction.
2) Take out the battery case and replace
the battery.
3) Re-insert the battery case making sure
that the (+) (red) and (-) (blue) marks
6
correspond. If this is done incorrectly,
the safety mechanism will activate
when the shutter is released.
To secure the battery case, press down
and turn the crank in the direction
of the
arrow until
it aligns with the red dot.
The alkaline battery should last about 6
months, while the silver-oxide about one
year with average
use at normal tempera-
tures. When the
TIL Pentaprism is used ,
the battery will last
less as it also must
activate the meter.
The battery supplied with your camera
may be
~lightly below full capacity as
it is considered to have discharged
spontaneously.
Also,
be sure to remove the battery when
the camera
is not in use for an extended
period
of time, as the battery may
deteriorate and cause damage
to the
contact points.

Battery Check
1) Press the battery check button at the
back
of the camera.
2) If the red shutter speed indication
lamp does
not light up, there is no
battery in the case, the battery is
drained, or the battery contact is
loose.
3) When inserting film or before taking a
picture, check the battery.
When the
battery power becomes insufficient the
mirror will stop partway up, blocking
the viewfinder. This safety device has
Battery check
been incorporated to prevent inac-
curate shutter speed.
•
To reset the mirror, press the safety
device release
button with a sharp
object, and press the shutter button
for
one blank exposure. The mirror will
then return
to the original position.
• Insert the battery when the
mirror
is back in the normal position, not when
it is partway up, as it consumes the
battery.
7

8
Operating the Shutter without Film in the Camera
The shutter mechanism of this
camera is designed so that without
film in the camera it is normally
disengaged. Should you need to
release the shutter before loading
film. follow either one of the
following two methods.
A. Releasing the shutter without
film in the camera.
1. Open the camera back (see page 12)
2. Place your finger on the dial of the
exposure counter and push while
Exposure counter
Counter dial
turning it counterclockwise until it
indicates
"1" or more.
3. Keep your finger in place while closing
the camera back.
4. Turn the rapid-wind lever and the
shutter will be cocked.
Note: The camera back can later
be
opened and closed without af-
fecting the shutter mechanism or
exposure counter provided the
shutter
is not released when the
back
is opened.

Operating the Shutter without Film in the Camera
Shutter cocking key
B. Releasing the shutter with the
back open.
1. Insert the shutter cocking key into its
slot, located
below the rapid- wind
lever. (see illustration)
First, insert the right-hand tip
of the
key and then the left while pressing in
on the tab inside the slot. Once the
key
is inserted adjust it so that it is
centered firmly in the slot.
2. Turn the exposure counter roller bar
to
the right. Stop when the counter
5
~";ter roller
..,
indicates "1" and you hear a slight
click. There
is no need to turn it any
farther.
3. Turn the rapid-
wind lever to engage
the shutter. The shutter can
now be
released
as many times as you wish.
Caution:
To prevent damage to the
shutter mechanism never turn
the exposure counter roller bar
to the left.
9

120/220 Film Type Settings
' Pressure Plate
This camera accomodates two types
of film: 120 (10 exposures) and 220 (20
exposures)
When changing film types, however,
the following two adjustments must
be made .
10
To avoid possible film drag and imprecise
focusing, the pressure plate
must be
properly positioned. Press the plate to
move it from side to side.
• For 120
film ; shift the plate to the left.
• For 220 film;
shift the plate to the right.
The plate's position can be viewed
through the camera's rear window .

Exposure Counter Control Dial
The exposure counter control dial is located
on the right-hand side
of the camera. With a
coin, set the dial
to correspond with the type
of film you are using. The shutter will be
automatically disengaged after the
number
of exposures for that type of film are
completed, permitting
continuous wind-up of
the film's remaining leader. Should you have
the dial set in the
wrong position it can be
changed
to the proper position as long as
you have not gone past the 9th frame of the
film.
120/220 Film Type Settings
11

Loading the Camera
To open the camera, pull down on the
release tab
at the lower left corner of the
camera back.
Two retainer knobs on both ends of the
camera
bottom secure the film spools in
.place. Unfold the crank, turn the knob
counterclockwise and pull
when inserting
or releasing a spool.
12
To close the camera, press firmly on its
back,
as shown in the center illustration,
until a
"click sound" is heard.

Avoid direct sunlight when loading or
removing film
1. Insert an empty take-up spool into the
right-hand side
of the camera. Push in
on the retainer knob and turn it
clockwise
to lock it into place.
2.
After removing the tape from the roll,
insert the roll into the left side
of the
camera and secure the retainer knob.
(Avoid getting loose bits
of paper in
the camera)
3. Pull out about 15cm
(6 in.) of the
Loading the Camera
film's leader and thread it into the slot
on the take-up spool. (Turn the rapid-
wind lever until the slot faces upward.
Never turn the spool
in the opposite
direction.)
4. Hold the leader in place while turning
the rapid-wind lever until the spool has
revolved once. Make sure the leader
is
rolling evenly onto the spool. If there
is an excessive amount of loose leader
rewind
it and start again.
13

Loading the Camera
5. As shown in the illustration, press
firmly on the film leader while turning
the rapid-wind lever so
that the leader
is wound tightly onto the spool. Be
sure to press only the area indicated
by the
two rectangular marks.
Pressing on the shutter curtain will
cause damage.
14
When the above method proves in-
convenient, such
as when the camera
is mounted on a tripod, you can also
use both hands
to tightly pre-wind the
leader
onto the take-up spool before
insertion
into the camera.

6. Pressing gently with your fingers,
slowly turn the rapid-
wind lever to
check if the leader is winding
smoothly. Keep turning the lever until
the arrow
of the film-start-mark aligns
with that indicated on the camera for
the type of film you are using. (120
marked in green, 220
in yellow.) Going
Loat:iing the Camera
beyond the mark can result in the loss
of one frame.
7. Close the camera back.
Without
pressing the shutter button, keep
turning the rapid-wind lever until the
counter indicates "
1" . The camera is
now ready for the first exposure.
15

Taking Out the Exposed Film
Exposure Counter
• After you have exposed the proper
number
of frames for the type of film
you are using the shutter will be
disengaged, allowing you
to continue
turning the rapid-wind lever until you
feel the film
go slack.
After taking 10 exposures of 120 film, or
20 exposures
of 220 film, the shutter
cannot be released even
though the
rapid-
wind lever is cocked. Keep turning
the rapid-
wind lever until there is little
resistance. The film
is now completely
16
wound.
Removing the Exposed Film
• Open the camera back. Press down on
the rim at the
top of the spool while
pulling
out the retainer knob. THe film
can then
be easily removed.
Caution: Do
not force the wind lever
when
it becomes taut.
This may damage the camera.

Shutter Button and Lock
The shutter button socket accepts all
standard cable releases. It
is equipped
with a locking device
that prevents ac-
cidental exposures when turned in the
direction indicated by the
arrow .
Shutter Release
The shutter button should be released as
smoothly and slowly as possible to avoid
blurred photographs. A little practice
is
advised in this procedure.
17

Setting Shutter Speed
In order to achieve a high degree of
precision the shutter-speed dial is a rotary
switch
which determines the shutter
speed electronically. However,
for this
reason intermediate speeds can
not be
. set.
To set the shutter speed rotate the
dial in either direction until the desired
speed indicated on the dial matches the
dot to the right.
Speeds
of from 1 to 1/ 1000 of a second
can be obtained
in addition to X and 8
settings.
At the "8" setting the shutter
remains open as long as the shutter
18
•
button is depressed.
Although there is no setting for long time
exposures,
if you set the dial anywhere
between the dial's indicated settings, such
as 500 and 1000, the shutter will
remain open.
To complete the exposure,
move the dial
to one of the indicated
settings.
With such time exposures and at
the "
8" setting, keep in mind that the
battery
is being exhausted.
For example,
with a continuous time
exposure, five hours
is enough to exhaust
a
new battery.

F-stop Number
The aperture ring is turned until the
desired F-stop number
is aligned with the
index on the lens body. The aperture can
be set for intermediate F-stops as well.
Their values are
as follows :
2 • 1.8 ' 4 • 5.6 ' 8 • 11 • 16 • 22 • 32 • 45
1.4 3.4 4.8 6.1 9.5 13 .5 19 26 38
With the 105mm f/2.4 lens, f/3.4 comes
after f12.4.
For the 90mm f/2.8 and 150mm f/2.8 the
sequence
is : f12. 8, f/ 4, 4. 8.
Setting the Aperture
On the 35mm f/ 4.5, f/ 5.6 comes after
f14.5. The second available F-stop
with
the 75mm f/4.5 is f/ 6.7.
Depth of Field
By stopping down the lens, you can s ee
the actual zone of sharpness at your
selected aperture.
In addition, the lens
has a scale
with two lines for each
aperture setting. Once you have fGcused.
the distance between these
two lines
(indicated on the focusing ring) gives you
your depth of field.
19