Pentax Data MX User manual

PENIM
I

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.

CONTENTS
Nomenclature .
Specifications .
Lens Mounting .
Inserting Batteries .
Basic Operating Instructions ...*.
Film Loading and Winding ..
Setting ASA Film Speed .-.
Setting the Shutter Speed Dial .
Composing and Focusing .
Exposure Measurement ...
Holding the Camera ....
Unloading Film .
Flash Synchronization .
Depth-of-Field Preview Lever and Scale .
Oepth-of-Field Table: SMC Pentax-M 50mm f/1.4 Lens
Meter Coupling Range .
Helpful Hints on Exposure Problems .
Dual Control Exposure System .
Shutter Button Lock ...
Manual Shutter Operation .
Self-timer.
Infra-red Photography .
Multiple Exposure ...
Interchangeable Focusing Screens.*.
Using Screw-mount Takumar Lenses .
Open-aperture and Stop-down Metering Lenses .
Resistance to Temperature Extremes and Changes .
Camera Maintenance .
Warranty Policy .
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O Exposure counter
O Shutter button lock lever
€) Shutter-cocked indicator
O Shutter release button
0ASA window
0ASA dial lock button
O Shutter speed dial
O Shutter speed index
O Bapid-wind lever
Aperture read-out prism
window
(P Hot shoe X contact
0 Film rewind knob/Back
cover opener
(E) Film rewind crank
(D Lens release lever
(D Self-timer lever/Depth-of-
field preview lever
^ Upraised alignment dot
Focusing ring
(£) Distance scale
Aperture/Oistance index
rD Oepth-of-field scale
Aperture ring
I
2 ^

0 X-sync terminal
0 FP-sync terminal
0 Neck strap ring
0 Viewfinder eyepiece
0 Film pressure plate
0 Guide pin channel
0 Winder/Motor Drive direct
contact terminal
0 Film chamber
0 Battery chamber
0 Motor Drive/Tripod
receptacle
0 Film rail
0 Film guide rail
0 Shutter cu rtai ns
0 Film rewind button
0Film transport coupler
0Bulk magazine guide pin
channel
0Sprockets
0Film take>up spool
0Back cover

SPECIFICATIONS
Type 35mm full-frame SLR camera with open-aperture center weighted
Through-The-Lens meter.
Lens mount Pentax K bayonet.
Standard tenses 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 60mm f/2
Shutter Horizontal-run, rubberized silk focal-plane shutter; speeds from 1
to 1/1000 sec. plus B; shutter lock and "Cocked" indicator.
Flash synchronization FP and X sockets, plus hot/cold accessory shoe for X contact; 1/60
sec. X synchronization.
Self-timer Delays shutter release to 4 -12 seconds; self-timer starter button
provided.
Viewfinder Silver-coated pentaprism finder; split-image microprism focusing
screen (9 interchangeable screens); 95% of picture-taking area visible
and 0.97X 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.
Mirror and diaphragm Instant return mirror and automatic diaphragm. Depth-of-fteld
preview with self-timer lever.
Film wind and rewind 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
Maglc^needle 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: EVM9(ASA100,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 Q on
the camera body with the red
dot ® 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 0 on
the lens barrel with the lens
release lever 0 by touch.
Then turn and lock as above.
4. T o detach, hold the camera
with your left hand. Depress
the lens release lever 0 while
turning the lens counter¬
clockwise with your right hand.
If you have to put the lens
down without the rear lens
cap, place it front-element-
down, never front element-up.
6 *

i INSERTING BATTERIES
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 salted.
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.
• 7
• 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 1+) 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.

BASIC OPERATING INSTRUCTIONS
1, S et 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. C o c k 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. S e t 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.