Pentax M MX Instructions

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RP 9?
SMC Pentax lenses and Pentax
accessories are engineered and
produced meticulously to precise
Pentax specifications. Lenses
and accessories from other
manufacturers are not produced
to these precise specifications
and, therefore, may cause
difficulties with — or actual
damage to —a Pentax camera.
Pentax cannot assume any
responsibility for difficulties
resulting from the use of any
other brand of lenses or acces-
sories with Pentax camera.
® 1
CONTENTS
Nomenclature oveveeeevairrannsreseaseasserssssssaasrassossssseissintaniarsssraerestnasssacees 2
Specifications erica encnaocoona 4
Lens Mounting — .............ee=..reesceiercnar reno icon aracenenectrarnenarenenentaneanreranneaa 6
Inserting Batteries — ..............<..r-oreccicomenirerenocanoienennenaacnecorcanenacenrenee<e 7
Basic Operating Instructions — ..--…….ssveeceemeneeenennenn=nesnnen=s encens 8
Film Loading and Winding ..................—..- Ceneacidarimocancarnentarronreenmenacas 10
Setting ASA Film Speed — ...........e.onesessecreeres ... 11
Setting the Shutter Speed Dial irises 12
Composing and FOCUSING couriers sssasnassansssscee 13
Exposure Measurement 3 _……………cmeereenenmenentenen=en nn nee cette 14
Holding the Camera ..…...…..…....….….……cecrarrensemmen anne eee rten eri e once aereo 15
Unloading Film iinet AEG .... . 16
Flash Synehronization ...........—.—e-.+e=ece-eeree-eerineiener encerrar eee 18
Depth-of-Fietd Preview Lever and Scale .….........…surrrsececenesser scene 20
Depth-of-Field Table: SMC Pentax-M SOmm f/1.4 Lens ........... 21
Meter Coupling Range ........... aacuseneneuremran ee ne name scan en eee 22
Helpful Hints on Exposure Probiems .... e raaraconooneneonecconacares 23
Dual Control Exposure System — .........ee=reeemveervecarempanaoonaaneoeecane> 23
Shutter Button Lock nn nrecarcenenetcarrenaartaancanenaranarenoraner teen 24
Manual Shutter Operation ....................escervenorecerocenenarennecacaraccar arena 25
Self-timer ........—...——.-..1.eereceneocanoenarerr rare anntavameranncacvevareacanrra sao cranoaaaceneeao 26
Infra-red Photography .............ce<eenerecvencererencenenmnenecaaraanen tene 27
Multiple Exposure .....…..….……ercenieencencen anne censencmesen en enter nee eee 28
Interchangeable Focusing Screens .............c.e-reene==mrecereeoreerereeneeer e 29
Using Screw-mount Takumar Lenses eucecaneanenoncarannacaconerecao 30
Open-aperture and Stop-down Metering Lenses ........e.....e.e.enncen—- 32
Resistance to Temperature Extremes and Changes .........e.esecoceneo 33
Camera Maintenance — ..............vemerieciimenconenenceucoranenenecanecnaranaconreresa 34
Warranty Policy ............e.e---.e-remeineenoonrionencaePLenenaan roman toeraaeanere se 36
| NOMENCLATURE |
No Ш |
« =
UN ro A Ч R Na
o — oY ON , - N \. . Ne, >
© Exposure counter © Rapid-wind lever D Self-timer lever/Depth-of-
@ Shutter button lock lever © Aperture read-out prism field preview lever
© Shutter-cocked indicator window © Upraised alignment dot
© Shutter release button D Hot shoe X contact Y Focusing ring
© ASA window O Film rewind knob/8ack © Distance scale
O ASA dial lock button : cover opener E Aparture/Distance index
© Shutter speed dial ® Film rewind crank 7 Depth-of-field scale
O Shutter speed index D Lens release lever ÿ Aperture ring
à X-sync terminal
E FP-sync terminal
D Neck strap ring
5 Viewfinder eyepiece
> Film pressure plate
fp Guide pin channel
© Winder/Motor Drive direct
contact terminal
.3
& Film chamber
& Battery chamber
$ Motor Drive/Tripod
receptacle
& Film rail
€p Film guide rail
@ Shutter curtains _
O Film rewind button
40
@ Film transport coupler
@ Bulk magazine guide pin
channel
@Sprockets
© Film take-up spool
© Back cover
Type
Lens mount
Standard lenses
Shutter
Flash synchronization
Self-timer
Viewfinder
Mirror and diaphragm
Film wind and rewind
SPECIFICATIONS
35mm full-frame SLR camera with open-aperture center weighted
Through-The-Lens meter.
Pentax K bayonet,
SMC Pentax 50mm f/1.2 SMC Pentax-M 40mm f/2.8
SMC Pentax-M 50mm f/1.4
SMC Pentax-M 50mm f/1.7
SMC Pentax-M 50mm f/2
Horizontal-run, rubberized silk focal-plane shutter; speeds from 1
to 1/1000 sec. plus B; shutter lock and “Cocked” indicator.
FP and X sockets, plus hot/cold accessory shoe for X contact; 1/60
sec. X synchronization.
Delays shutter release to 4 -12 seconds; self-timer starter button
provided.
Silver-coated pentaprism finder; split-image microprism focusing
screen {9 interchangeable screens); 95% of picture-taking area visible
and 0.97 X magnification with 50mm lens at infinity}; —1 diopter
eyepiece. Information viewfinder shows f/stop, shutter speed and
tri-colored LED read-out dots. Correction lens adaptor M, Magnifier
M and Refconverter M fit the viewfinder frame.
Instant return mirror and automatic diaphragm. Depth-of-field
preview with self-timer lever.
Ratchet-type rapid wind lever, plastic-tipped for winding comfort.
162° throw with a stand-off angle of 20°. Rewind crank for
speedy film rewind.
Film loading
Automatic winder
Exposure counter
Exposure meter
Power source
Back cover
Body size
Body weight
e5
Magic-needie quick/sure loading.
MX camera body accepts Winder MX for up to 2 frames-per-second
(single-frame and consecutive exposure operation possible) and
Motor Drive MX for up to 5 frames per second (single-frame and
consecutive exposure operation possible), for automatic, speedy
film wind and shutter cocking.
Automatic reset type.
Open-aperture, center-weighted Through-The-Lens meter, with
SPD cells for fast light response, with tri-colored LED exposure
read-out, rapid wind lever and shutter release button acting as meter
switch. Exposure range: EV 1-19(ASA 100, f/1.4), Film speed
range: ASA25-1600.
Two 1.5V Alkaline (LR44) or Silver-oxide (G13) batteries; LEDs in
view finder double as battery check lamp, cease to light on battery
failure.
Standard back with memo holder, interchangeable with Bulk Film
Magazine MX, Dial Data MX for data recording on film.
135.5mm x 83.5mm x 49.5mm.
495 grams.
LENS MOUNTING
|
1. Remove the rear lens and
body mount covers
2. Match the red dot © on
the camera body with the red
dot O on the lens. Insert the
lens into the body and turn it
clockwise until the lens locks
with a click.
3. in the dark, when the red
dots are difficult to see, align
the upraised white dot © on CALA
. CLEAR UT Ne
the lens barrel with the lens o
release lever O by touch.
Then turn and lock as above.
4. To detach, hold the camera
with your left hand. Depress
the lens release lever ® while
turning the lens counter-
clockwise with your right hand.
down without the rear lens
cap, place it front-element-
down, never front-element-up.
Two Alkaline batteries are
packed separately. Be sure to
insert them into the battery
chamber before operating
the camera.
The battery is like a
phonograph record. It can be
damaged by skin acids. Handle
by the edges with a dry cloth
before insertion into the
camera. Also be especially sure
to wipe off the battery with a
cloth when they are saited.
The battery is not rechargeable.
Do not throw a dead battery
into a fire, as it may explode.
Also, keep it beyond the reach
of small children.
e7
| INSERTING BATTERIES
e INSERTION Open the
battery chamber cover with
a coin. insert the two batteries
into the battery holder of the
cover as shown above, each
with {+) side facing up.
* CHECK To check battery
life, depress the shutter release
button halfway, while looking
through the viewfinder. If the
batteries are dead, the LED dots
will not glow.
Tm mr Ca o DARA A Ll mr rd
BASIC OPERATING INSTRUCTIONS
1. Set Film Speed
While depressing the tiny button atop the shutter dial, turn the
rim of the shutter dial until the ASA number of the film you are
using is centered in the ASA window.
2. Cock Rapid-Wind Lever
Cock the rapid-wind lever all the way until it stops. The “Cocked”
indicator will turn red, showing that the shutter is cocked.
3. Set Shutter Speed
Turn the shutter speed dial until the speed you want to use is
opposite the index mark. Generally, you should use the fastest
possible shutter speed to avoid blurred pictures caused by camera
movement. Try starting with 1/125 sec. outdoors in daylight and
1/30 sec. indoors. |
4. Composing and Focusing
While viewing through the finder, turn the focusing ring until your
subject comes into sharp focus and choose the most pleasing
composition.
5. Turn on Exposure Meter and Rotate Aperture Ring
Pull out the rapid-wind lever slightly (20°} and depress the shutter
release button halfway to turn on the exposure meter. The
preselected shutter speed plus the two adjacent speeds (''60"” and
250” in the case of 125”) are visible on the right-hand side of
the viewfinder. Trun the aperture ring until the central green LED
dot glows which indicates proper exposure. {The f-stop you have
selected is also visible in the small window above the focusing
screen). If the central green dot does not glow no matter how far
you turn the aperture ring, change the shutter speed.
5. Release Shutter
Hold your camera firmly and trip the shutter. Then cock the
rapid-wind lever for the next picture. {As long as the lever is at its
preadvance angle, the light meter stays ON. If you push it back to
the completely closed position, the meter is turned OFF.)
eg
FILM LOADING AND WINDING
Fa
Avoid direct light when loading your film.
|
„чт В, Ta
1. Open the back by pulling up 2. Place the film cartridge in the 3. Advance the film by alternately
the rewind knob until the back film chamber, and push down advancing the rapid wind lever
opens. the rewind knob. Insert the film ~ and depressing the shutter
leader in between any of the button until both top and
white plastic pins surrounding bottom sprockets engage the
the film take-up spool. film perforations. Close the back
by pressing it firmly.
4. Cock the rapid-wind lever, and confirm that the film rewind knob turns counterclockwise, indicating
er: ‘ : | UL that the film is properiy loaded
x | and is moving from cartridge to
take-up spool. Trip the shutter.
Advance the film until the
exposure counter turns to 1”,
indicating that the first picture is
ready to be taken.
mr
Lu
10e
| MEMO HOLDER
As a'reminder of the type of
film in your camera, tear off the
top of the film box and insert it
into the Memo Holder on the
back cover of the camera.
AAC A ee Le ATTE A
“ILM FOR COLOR ERIN’
011
SETTING ASA FILM SPEED
The ASA film speed rating of all 35mm films is given in the data
sheet packed with each roll of film. The higher the ASA number,
the more sensitive the film is to light. While depressing the ASA dial
lock button Q , turn the rim O of the shutter dial until the ASA
number of your film is aligned with the index mark.
Be sure to set the ASA film speed because it is coupled to the
exposure meter system.
© 1250 1000 640 500 320 256 160125 80 50 40 28
; + 1 1 6 1 e 1 17 e tre te ti el
‘1600 800 400 200 100 64 32
SETTING THE SHUTTER SPEED DIAL
Turn the shutter speed dial clockwise or counter-clockwise to the
shutter speed desired. The shutter speed may be set either before or
after cocking the rapid-wind lever. As you cock the shutter by
turning the rapid-wind lever, the ‘cocked’ indicator turns red
showing that the shutter is cocked. The color of the cocked indicator
changes to black after tripping the shutter. For use of the X setting
on the shutter speed dial, refer to page 18.
With the shutter speed dial set on B {bulb), the shutter will stay
open as long as you depress the shutter button. As you release your
finger from the shutter button, the shutter closes. When a long
exposure is desired while using the B setting, set the shutter button
lock by moving the lever to the left (an “L” becomes visible) while
depressing the shutter button. Alternately, use a cable release with a
locking device for a time exposure.
CAUTION
At long speeds, longer than 1/30 (1/15 - 1 sec., B), support your
camera rigidly to prevent camera movement. To protect the shutter
mechanism, trip the shutter before putting the camera away for any
extended period.
120
#13
COMPOSING AND FOCUSING
The standard focusing screen of your MX has a
central split-image circle surrounded by a
microprism collar. While looking through the
viewfinder, turn the focusing ring until your
subject comes into sharp focus. If your subject is
not in focus, the image in the split-image circle
will appear divided into upper and lower portions,
and the image in the microprism collar will appear
broken into many small fragments.
EXPOSURE MEASUREMENT
When the rapid-wind lever is pulled out 20° and the shutter button
is depressed halfway, the exposure meter is turned ON, Turn the
aperture ring to get a proper LED exposure read-out in the
viewfinder.
On the right-hand side of the viewfinder, appear the preselected
shutter speed plus two adjacent speeds le.g. 60” and ‘’250” in the
case of 125") on a transparent disk which protrudes slightly into
the focusing screen area.
On the right-hand side of the shutter speeds shown, there are 5 LED
dots which are normally not visible. If you depress the shutter
button halfway and the exposure is correct, the central green dot
will illuminate. If the exposure is 1/2 EV over, the orange dot next
to 250” {in the above example) will glow; as will the dot next to
"60" in the case of 1/2 EV underexposure. If itis 1 EV or more
over or under, the appropriate red dot will glow as a warning for
adjustment of either the f-stop or the shutter speed, unless you want
to make intentional over or underexposure.
140
HOLDING THE CAMERA
As a general rule, your camera can be held more firmly in the left hand, which does not release the shutter
If you hold your camera with the right hand — the hand that releases the shutter — this may cause camera
movement. Often, blurred pictures are due to camera movement,
Horizontal position A.
Hold the camera firmiy with
your left hand, and draw your
arms close to your body.
Vertical position B.
Hold your camera tightiy to
your forehead with your left
hand, and draw your right arm
close to your body.
Vertical position €
Hold your camera tightly to your
forehead with your left hand,
raise your right arm and draw
your left arm to your body.
®15
UNLOADING FILM
After the final picture on the roll has been taken, the rapid-wind lever
will not advance further, indicating that the film must be rewound.
Lift up the rewind crank. Depress the film rewind button and turn
the rewind crank as indicated to rewind the film into its cartridge.
Rewind until the tension on the crank lessens, indicating that the
leader end of the film has been released from the take-up spool. Pull
out the film rewind knob (the back will open automatically}, and
remove the film cartridge.
AVOID DIRECT LIGHT WHEN UNLOADING THE FILM.
[теснее =
16
817
FLASH SYNCHRONIZATION
The MX has FP and X terminals on the front of
the camera body, and a separate X contact on the
built-in hot shoe. The table on the next page
shows which flash contact, which shutter speed
and which flash bulb may be combined for
maximum lamp efficiency. Unless these
combinations are rigidly followed, there will be a
failure in flash synchronization. Note the "X"
setting is exactly at the 60 mark on the shutter
speed dial. This indicates the highest shutter speed
at which electronic flash units may be used.
Use the hot shoe flash contact when using a shoe-
mount electronic flash which has a flash contact
on the shoe bracket.
When using the hot shoe, there is no need to plug
the flash cord into the X terminal on the front of
the body. The hot shoe flash contact turns to
"hot” {switched on) only when you insert a shoe-
mount electronic flash. lt remains “cold”
(disconnected) even when using an electronic
flash with its cord plugged into the X terminal on
the body front. This eliminates the danger of
electric shocks.
180
FF
There are basically two types of flash bulb
attachments on the market: clip-on types and
bracket types. Either can be used with your
camera. The clip-on types are attached to the hot
shoe and the bracket types are attached via the
tripod socket.
Use one of these three bulb types: M, MF or FP.
The correct terminal and the correct shutter
speed to use for each of these three types are
outlined in the table below.
Before attaching the flash unit to the camera,
you must remove the protective plug from the
proper terminal. When not using the terminals,
keep the plugs inserted.
EC
A A IP
1
1 1
SHUTTER SPEED 1060 500 750
1
ELECTRONIC FLASH X
FLASH BULB x
e 19
A
125
FP | FP CLASS M.
M. MF . FP CLASS
DEPTH-OF-FIELD PREVIEW LEVER AND SCALE
Depth of field is the range between the nearest and farthest distances
which are in focus at a given lens aperture. If you want to know how
great the depth of field is at a certain aperture, focus on a subject
and look through the viewfinder while moving the Self-timer lever
toward the lens, and you will be able to preview the depth of field.
Or, after focusing, took at the depth-of-field scale on the lens. In the
photograph below, the distance scale is set at 5 meters; that is, the
lens is focused on a subject 5 meters away. The calibrations on each
side of the distance index correspond to the diaphragm setting and
indicate the range of in-focus distance for different lens apertures.
For example, if a lens opening of f/4 is to be used, the range on the
distance scale ring covered within the figure 4 on the depth-of-field
scale indicates the area in focus at that lens opening. You will note
from the depth-of-field scale in the photograph that the range from
approximately 4 to 7m is in focus. Note that as the lens aperture
changes, the effective depth of field also changes. For the depths of
field at different apertures and distances, refer to the next page.
2
o 1
7 6 5 4 3 2 1 0
Distance (m)
20.
DEPTH-OF-FIELD TABLE: SMC PENTAX-M 50mm f/1.4 LENS
Сизтался scale 0.45m 06m 1m 1.6m 2m 3m Em 15m .“
ma 0.447 0.595 0.984 1.587 1.932 2.846 4.579 11.712 52.938
. ~ 0.453 ~ 0.605 - 1.017 ~ 1,645 ~ 2.073 ~3.172 ~ 5.506 ~ 20.868 ~ e
2 0.446 0.593 0.977 1.539 1.904 2.785 4.420 10.707 37.070
~ 0.454 ~ 0.608 ~ 1.024 ~ 1.666 ~ 2.106 - 3.252 ~ 5.757 ~ 25.077 =
0.445 0.590 0.969 1.516 1.869 2.708 4.225 9.609 26.491
1/2.8 ~ 0.455 ~ 0.611 ~ 1.034 ~ 1.694 ~ 21532 ~ 3.365 ~ 6.128 ~34.313 ~ oo
1 0.443 0.586 0.956 1.483 1.818 2.599 3.962 8.329 18.557
4 ~ 0.458 ~ 0.615 ~ 1.049 ~ 1.737 ~ 2.224 ~ 3.550 ~ 6.786 ~ 76.783 ~ os
e 0.440 0.580 0.239 1.441 1.754 2.468 3.659 7.075 13.268
5.6 - 0.461 ~ 0.622 ~ 1.070 ~ 1.799 ~ 2.329 - 3832 ~ 7.922 - оо
в 0.436 0.572 0.915 1.383 1.667 2.294 3.284 5.774 9.300
~ 0.466 ~ 0.631 ~ 1.103 ~ 1.901 ~ 2.506 ~ 4.351 — 10.585 ~ oe ~
6 0.430 0.562 0.887 1.316 1.569 2.105 2.911 4.897 6.776
11 ~0.472 ~ 0.644 ~ 1.148 ~2.047 - 2771 - 6.247 ~ 18.301 ~ oe ~~ ce
116 0.422 0.546 0.844 1.219 1.430 1.851 2.450 3.588 4.672
/ ~ 0.482 ~ 0.667 ~1231 „2.348 „3.366 ~7.978 “oe о 372
0.413 0.529 0.798 1.120 1.294 1.631 2.061 2.799 3.a10
1/22 ~ 0.496 ~ 0.696 ~ 1.349 ~ 2.855 ~ 4.645 ~ 21.688 om ~~ = =
©
Distance scale 1.55 1.9" 2.5 a 6’ a 12° 25 о.
ma 1.540" 1.884" 2.471 2.957 5.814" 7.667 11.252 21.9068 173.686"
. ~ 1.560" — 1.916‘ ~ 2.530" ~ 3.045" ~6.198" ~ 8.364" - 12,856” . 29.127 -o
#2 1.536’ 1.878" 2.459’ 2.939" 5.738‘ 7.533" 10.960" 20.802 121.623
— 1.564‘ - 1.923 ~ 2.543 - 3.064" -5.287 ~ 8.530" ~ 13.262" - 31.339" <
228 1.531" 1.869" 2.447" 2.915 5.640' 7.361° 10.593" 19.495° 86.915
- ~ 1.570" ~ 1.932" ~ 2.560" ~ 3.097 = 6.410" ~ 8763" ~ 13.845' ~ 34.884" ~ a
sa 1.523' 1.856" 2.419" 2,880 5.499 7.118" 10.087" 17.817 60.884
—1°573 — 1.946" ~ 2.587 ~3.131° ~ 6.604 ~9.137 ~ 14.824" ~ 42.020’ ~ os
‘ 1.512" 1.839" 2.388" 2.835' 5.322 6.318" 9.485' 15.986" 43.530°
75.6 ~ 1.890" ~ 1.965" ~2.624° - 3.1897" ~ 6.882 ~ 9.690" ~ 16.370 - 57.817 -
4 1.497" 1.815" 2.343' 2.769' 5.078" 6.414 8.706‘ 13.055 30.514'
8 - 1.608" ~ 1.996" ~ 2.681" ~ 3.275 ~7.347 — 10.660 - 19.414" — — 132,990 - e
1.478" 1.785 2.290" 2.692 4.802" 5.973 7.898' 11.882" 22.231
1/13 - 1.631' ~ 2.033" ~ 2.756" ~ 3.393" ~8.027 ~ 12.190" ~ 25.319" = ~ =
1.447" 2.107 2.206‘ 2,573 4.406' 5.361" 6.845 9611 15.329"
£16 ~ 1.670 ~ 1.737 ~ 2.892" ~ 3.609 ~ 9.500" ~ 16.047 ~ 51.597 ~ e
#22 1.413' 1.684’ 2.114 2.445 © 4.012 4.778" 5.906" 7.827 11.188‘
1.721" ~ 2.188’ ~ 3.075 ~3911 ~ 12.205 ~ 25.969" - e = ое» - e
21
METER COUPLING RANGE
The exposure meter of the MX measures the any aperture that will illuminate the green LED
brightness of the ground glass. Therefore, the in the viewfinder. The total range of the aperture
proper LED exposure read-out should be settings is, of course, determined by the minimum
obtained after you have focused your subject on and maximum apertures of the lens being used.
the ground glass. The green area in the table For example, with the 50mm f/1.4 lens and
indicates the coupling range of the meter, and — ASA100 film, an aperture from /1.4 (the
should not be interpreted as the camera's total maximum aperture of this lens) to f/22 (the
range of f/stop-shutter speed combinations. As minimum aperture} may be used with any shutter
you will note from the table below, with speed from 1 sec. to 1/1000 sec. that will
ASA100 film, you may use any shutter speed illuminate the green LED,
from 1 sec. to 1/1000 sec. in combination with
SHUTTER SPEED
25
50
100
200
400
800
1 12 (14
18 11'15j1 30,1 60 }1 125/1250|1 500 |1 1000
ASA
1,800
As exposure measurements made at 1/1000 sec. with 25 ASA film will not be accurate, exercise
caution. When using the 50mm f/1.4 lens, accurate exposure measurement at the points found
in the shaded area in the above table can be guaranteed only when using up to f/16 (f/1.4 — f/16).
220
HELPFUL HINTS ON EXPOSURE PROBLEMS
The exposure meter built into your MX takes a
center-weighted reading from the entire scene as
seen through the viewfinder. Sometimes, however,
there is a great difference between the light
reflected from the background and the light
reflected from the subject. In such a case, to
achieve a really good photo, you must
compensate for the difference by opening or
closing down the aperture 1 or 2 stops.
As a general rule, when the subject is darker than
the background, you compensate by opening
your aperture 1 or 2 stops more. For example:
on a bright day, when your subject has his back
to the sun and you are shooting directly toward
the sun . . . or when you are shooting a subject
against snow or light-colored sand . . . or when
you are copying a page of black letters on white
paper, increase the size of the aperture somewhat.
When your subject is brighter than the background
— if he is standing in a spotlight, for example —
you make the aperture 1 or 2 stops smaller to
compensate.
® 23
DUAL CONTROL EXPOSURE SYSTEM
Since both the aperture and shutter speed are
indicated within the viewfinder, you can control
exposure by adjusting either the shutter speed
dial or the aperture ring.
When the aperture size is the most important
factor, set the aperture desired by turning the
aperture ring. Then adjust the shutter speed dial
until the green LED iHuminates.
When shutter speed is the more important factor,
turn the dial to the speed you desire. Then adjust
the aperture ring until the green LED illuminates.
SHUTTER BUTTON LOCK
The shutter button lock lever is for your
convenience while you are making a particularly
long exposure using the B shutter speed setting.
After depressing the shutter button, turn the lock
lever (which is on the collar at the base of the
shutter button) so that the letter “L”' is visible.
When the exposure time is up, move the lock
lever back to its original position. This
automatically releases the shutter button. In
addition to making “Time” exposure, the tock
lever is also used to turn off the meter circuit and
simultaneously prevent accidental release of the
shutter.
240
25
MANUAL SHUTTER OPERATION
The two alkaline or silver oxide patteries in
your MX are used only for powering the
exposure meter; the shutter mechanism is
a totally manual operation.
Therefore, your camera can still be operated
even if the batteries have worn out.
if the batteries have worn out and the exposure
meter is no longer functioning, you must
determine the correct combination of shutter
speed and aperture size yourself, from your own
experience. Also, packed in with most types of
235mm film is a data sheet with suggestions for
determining the correct exposure in a variety of
situations.
SELF-TIMER
The Self-timer delays the shutter release by 4—12
seconds, depending upon how far counter-
clockwise (when camera faces you) the lever is
advanced. When using the Self-timer, do not
depress the shutter button . . . it will immediately
release the shutter without delayed action.
After cocking the rapid-wind lever, advance the
Self-timer lever © 90° - 180°. Then, push the
start button © , and the Self-timer will
commence.
26e
INFRA-RED PHOTOGRAPHY
If you intend to take infra-red photographs,
remember to use the infra-red mark indicated with
an orange line on the depth-of-field scale. First,
bring your subject into sharp focus. Then
determine the subject-to-camera distance from the
distance scale on the lens. Then match your
subject-to-camera distance to the infra-red mark
by turning the focusing ring accordingly.
For instance, if your subject is in focus at infinity,
turn the focusing ring and move the infinity (oo)
mark to the infra-red mark.
‘© NOTE: An infra-red focusing adjustment is not
required when working with infra-red color film.
e27
MULTIPLE EXPOSURE
For deliberate multiple exposures, make the first
exposure in the normal way. Then tighten the
film by turning the rewind knob { , and keep
hold of the rewind knob. Depress the film rewind
release button : and advance the rapid-wind
lever. This cocks the shutter without advancing
the film. Finally release the shutter to make the
second exposure. Then make one blank exposure,
before taking the next picture, to avoid overlapping.
Âs the exposure counter continues to function
each time the shutter is cocked, a double
exposure will be counted as two frames.
28e
| INTERCHANGEABLE FOCUSING SCREENS
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In addition to the standard split-image +
microprism focusing screen, there are 7 other
interchangeable focusing screens available for your
MX.
To remove the standard focusing screen, pull the
screen retainer pin Q toward you with the
pincette supplied with the interchangeable
focusing screen. The focusing screen will then flip
down. Remove the screen from the frame by
grasping the protruding portion of the screen with
the pincette.
To install the screen of your choice, place it on
the screen frame, pushing it back to the original
position until it locks with a click.
To remove dust particles from the screen, never
wipe it with 8 cloth, or the like, but just use a
biower.
e29
USING SCREW-MOUNT TAKUMAR LENSES
Conventional screw-mount Takumar lenses {both
Super-Takumar and SMC Takumar) can be easily
mounted onto your camera by attaching them
first to a Mount Adaptor K. However, when
Adaptor K is used, the following is true:
Due to the difference in coupling systems, the
automatic diaphragm will not function.
_ Full-aperture metering lenses will function as
stop-down metering lenses.
» How to Use Mount Adaptor K
i Screw the conventional Takumar lens into the
Mount Adaptor K.
> Attach the Adaptor/lens unit to the camera
body by aligning the red dots Q and O , and
turning the lens clockwise until it locks with a
click. (This takes slightly less than a quarter of a
revolution.)
3. To remove the lens, leaving the Mount Adaptor
K attached to the camera body, simply unscrew
the lens counterclockwise. Other screw-mount
NE Tap
Takumar lenses can then be attached in the
normal way.
1. To remove the Mount Adaptor K from the
camera body, first remove the screw-mount lens.
Then press, with your thumbnail or a pointed
object such as a ballpoint pen, against the spring
pin O |
2. Turn the Mount Adaptor K counterclockwise
until you feet it release, and take it out.
3. Since the mechanism for locking in the Mount
Adaptor K is totally different from that which
locks in an SMC Pentax bayonet-mount lens, the
lens release lever €) on the camera body plays
no part at all.
OPEN-APERTURE AND STOP-DOWN METERING LENSES
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Open-aperture SMC Pentax lenses have a
diaphragm coupling lever on the back of the
lens which couples with the camera body to
permit open-aperture metering. The ultra
telephotos do not have a diaphragm coupler, so
they must be used with the stop-down metering
system. Use of the Auto-Extension Tube Set K
permits open-aperture metering. Use of other K
Series accessories — standard Extension Tube Set
K, Helicoid Extension Tube K, Auto-Bellows M
and Bellows Unit Il — requires stop-down metering.
Whenever any one of these is used between the
camera body and an SMC Pentax lens, the stop-
down metering system must be used.
320
RESISTANCE TO TEMPERATURE EXTREMES AND CHANGES
The temperature range at which your camera will
continue to function properly stretches from
50°C to -20” C. However, resistance to cold could
be hampered by oil which has become dirty.
Therefore, if the camera is to operate at full
efficiency in very cold conditions, it must be
overhauled and ali oil must be replaced.
Sudden changes in temperature will often cause
moisture to condense inside or outside your
camera. This is a possible source of rust, which
may be extremely damaging to the mechanism.
Furthermore, if the camera goes from a warm
temperature to a sub-freezing one, and if tiny
drops of moisture freeze, further damage may be
done by their expansion.
33
Thus, sudden temperature changes should be
avoided as much as possible. As a guide, a
temperature change of 10°C should be allowed to
take place gradually over a period of at least 30
minutes. If this is not possible, keeping the camera
in its case or bag will help somewhat in
minimizing the effects of a rapid temperature
change.
Extremely low temperature reduces the efficiency
of the battery. Therefore, the camera should be
protected against low temperature. Put the
batteries into the camera right before shooting.
For extremely low temperature, use new batteries.
. CAMERA MAINT ENANCE
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1. Always keep the viewfinder eyepiece, lens and
filters as clean as possible, To remove loose dust
and dirt, first use the blower and then the brush
of a lens brush. Do not try to wipe off granular
dirt or dust — it's an excellent way of scratching
the glass. Smudges, such as fingerprints, shou Id be
carefully wiped away with either lens tissue Or a
clean, soft cloth. Clean, plain cotton handkerchiefs
that have already been washed a few times are
particularly good for this. Breathing on the lens
before wiping is effective; but be sure to wipe
away all moisture completely. Commercial lens
cleaners are also effective.
2 Never touch the mirror or the shutter curtain
with your hands. (The natural acids on your skin
are very damaging ) Minor dirt or spots on the
mirror will not affect the clarity of your pictures.
3, Take care not to drop the camera or knock it
against anything solid. Accidents or rough
handling can easily damage the internal mechanism,
even though externally nothing seems to have
been hurt.
340
4. Your camera is not waterproof. There are
several places where water can get inside and do
a great dea! of damage. Take care to protect both
body and lens from rain or splashing water. If
. your camera should get wet, dry it off immediately
with a clean, soft cloth. `
Once a camera has become completely soaked,
there is often nothing that can be done to make
it right again. However, in such a case, take
your camera as soon as possible to an authorized
Pentax Service Center.
“ Where to keep your camera while you are not
using it is an important point. The best storage
place is cool, dry, clean and well-ventilated.
Because of the possible build-up of humidity, it
is risky to store your camera in a cabinet ог closet.
It's also a good idea to keep your camera in its
bag or case while you are not using it.
& When mounting your camera on a tripod, be
sure the tripod screw is no longer than 5.5mm.
This is the depth of the tripod socket on your
camera. If you use a longer screw, you will
+35
probably puncture the bottom of the socket,
after which the camera will not function properly.
In order to prevent large diameter lenses
from interfering with proper mounting of the
camera to the tripod, attach the Spacer Ring
(packed with the camera) between camera
and tripod.
WARRANTY POLICY
All Pentax cameras purchased through authorized
bona fide photographic distribution channels are
guaranteed against defects of material or work-
manship for a period of twelve months from
date of purchase. Service will be rendered and
defective parts will be replaced without cost te
you within that period, provided the equipment
has not been abused, altered, or operated contrary
to instruction. Because the tolerances, quality, and
design compatibility of lenses other than Pentax
lenses are beyond our control, damage caused by
use of such lenses will not be covered by this
warranty policy. The manufacturer or its authoriz-
ed representatives shall not be liable for any
repair or alterations except those made with its
written consent and shall not be liable for dama-
ges from delay or loss of use or from other indirect
or consequential damages of any kind, whether
caused by defective material or workmanship or
otherwise: and it is expressly agreed that the
liability of the manufacturer or its representatives
under all guarantees or warranties, whether
expressed or implied, is strictly limited to the
replacement of parts as hereinbefore provided.
Procedure During 12-month Warranty Period
Any Pentax which proves defective during the
12-month warranty period should be returned to
the dealer from whom you purchased the equip-
ment or to the manufacturer. If there is no
representative of the manufacturer in your
country, send the equipment to the manufacturer,
with postage prepaid. In this case, it will take a
considerable length of time before the equipment
can be returned to you owing to the complicated
customs procedures required in Japan in
importing and re-exporting photographic
equipment. If the equipment is covered by
warranty, repairs will be made and parts replaced
free of charge, and the equipment will be
returned to you upon completion of servicing. if
the equipment is not covered by warranty, regular
charges of the manufacturer or of its representatives
will apply. Shipping charges are to be borne by
the owner. If your Pentax was purchased outside
of the country where you wish to have serviced
during the warranty period, regular handling and
36e
servicing fees may be charged by the manufacturer's
representatives in that country. Notwithstanding
this, your Pentax returned to the manufacturer
will be serviced free of charge according to this
procedure and warranty policy. in any case,
however, shipping charges and customs clearance
fees are to be borne by the sender. To prove the
date of your purchase when required, please
keep the receipts or bills covering the purchase
of your equipment for at least a year. Before
sending your equipment for servicing, please
make sure that you are sending it to the manu-
facturer's authorized representatives or their
accredited repair shops, unless you are sending it
directly to the manufacturer. Always obtain a
quotation of the service charge, and only after you
accept the quoted service charge, instruct the
service station to proceed with the servicing.
This warranty policy does not apply to Pentex
cameras purchased in the U.S.A. and U.K. For
these cameras, please refer to the separate
Warranty Policy Card enclosed here.
Asahi Optical Co, Ltd, C.P.O. 895, Tokyo 100-91, JAPAN
. Asahi Optical Europe N.V, Weiveldlaan 3-5, 1930 Zaventem Zuid-7, BELGIUM
Pentax Handelsgesellschaft mbH. 2000 Hamburg 54 (Lokstedt), Grandweg 64, WEST GERMANY
Pentax Corporation 35 Inverness Drive East, Englewood, Colorado 80112, U.S.A.
Pentax Canada Inc. 1760 West 3rd Avenue, Vancouver, B.C, V6J 1K5, CANADA
Pentax U.K. Limited Pentax House, South Hill Avenue, South Harrow, Middlesex HA? OLT, UK.
Pentax France S.A. 72-76 Rue Paul, Vaillant Couturier, 92300 Levallois Perret, FRANCE
Asahi Optical Brasileira Ind. e Com, Ltda. Rua Estados Unidos, 1053, Sáo Paulo-SP, BRASIL
06691 Printed in Japan
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