OPERATING MANUAL

To ensure the best performance from your camera,
please read the Operating Manual before using the camera.

Welcome to the Fantastic World of Pentax
Autofocus Multi-Mode Medium Format Photography
The Pentax, our latest development in
the area of the medium format SLR, promises asuperior 6 x 4.5cm result with 120, 220, or
70mm film.
Made possible through our vast experience andtechnology accumulated over the years, thenew autofocus multi-mode
assures pinsharp focus accuracy with AF Spot and AF
Wide selection, and the 6-segment multi-patternmetering allows precise exposure control under
widely varying conditions. Unsurpassed versatility is assured through the utilizing of a fullrange of exposure modes (Programmed AE,Aperture-Priority AE and Shutter-Priority AE,
Metered Manual and TTL auto flash control), an
exposure compensation control and auto-bracketing mode and a new user-set Pentax Function
to customize theto meet the for user's
shooting preferences.

With a 645 A- or FA lens attached, theimprints relevant information (frame number,
shutter speed, aperture setting, exposure control and auto-bracketing mode.)
The Pentax
is a professional camera
possessing a number of highly sophisticatedfeatures: built-in automated film wind, an external LCD information panel and clearly visible
LCD information in the viewfinder.

Lenses and accessories produced by other manufacturers are not made to our precise specifications
and therefore may cause difficulties with or actual
damage to your Pentax camera. We do not assume
any responsibility or liability for difficulties resulting
from the use of lenses and accessories made byother manufacturers.

PENTAX is a trademark of HOYA Corporation.

TABLE OF CONTENTSLCD Panel Indication ............................................ 3
Viewfinder Indication ............................................. 3
Names of Working Parts ....................................... 4
FOR SAFE USE OF YOUR CAMERA .................. 6
Precautions for Your Camera................................ 7
Precautions for Battery Usage .............................. 9
I. BASIC OPERATION (PREPARATION) .......... 10
Attaching the Camera Strap................................ 11
Loading the Batteries .......................................... 12
Turning the Power ON ........................................ 14• *Low Battery Warning ....................................15
Attaching the Lens .............................................. 16
Detaching/Attaching Film Holder 645.................. 18
Pressing the Shutter Release Button .................. 20
Loading Film........................................................ 20

1Setting the Film Speed (ISO).............................. 24
Unloading Film.................................................... 25
Unloading the Film in Mid-Roll............................ 26
Installing the Eyecup .......................................... 27
Adjusting the Viewfinder Diopter ........................ 28
II. BASIC OPERATION (SHOOTING)................ 29
Using the Programmed AE Mode ....................... 30
Using the Multi(6)-Segment Metering Mode ....... 31
Using Autofocus Mode ....................................... 32
Using the Single AF Mode .................................. 33
Using the 3-Point AF Mode ................................ 34
Using the Single-Frame Drive Mode .................. 34
Holding the Camera............................................ 35
Taking a Picture.................................................. 362III. ADVANCED OPERATIONS .......................... 38
Selecting a Drive Mode ....................................... 38• Consecutive-Frame Mode..............................38• Self-Timer Mode.............................................39
Multiplex Exposure Mode.................................... 40
Selecting an Exposure Mode .............................. 42• Using the Programmed AE Mode ..................42• Using the Aperture-Priority AE Mode .............44• Using the Shutter-Priority AE Mode ...............46• Using the Metered Manual Mode ...................48• Using the Bulb Exposure Mode......................50
About Exposure Compensation .......................... 52
Auto Bracketing Exposure Mode......................... 53
Switching the Metering Mode.............................. 55• Using the Center-Weighted Metering Mode...55• Using the Spot Metering Mode.......................56
Using AE Lock..................................................... 57
Setting the Focus Mode Switch to the Continuous
Position ............................................................... 58

Using the Spot AF Mode .................................... 59
Focus Lock Function .......................................... 60
Manual Focusing ................................................ 61
Imprinting the Exposure Data on the Negative ... 64
Using a Pentax Dedicated External Flash .......... 68
Daylight- Sync Shooting ..................................... 72
Slow-Speed-Sync Shooting ................................ 73
Using the Preview Lever..................................... 74
Mirror Lock-up .................................................... 75
Pentax Functions ................................................ 76
Setting Pentax Function ..................................... 78
Accessories (Optional) ....................................... 83• Interchangeable screen ................................. 84
IV. OTHERS ....................................................... 86
Troubleshooting .................................................. 86
Specifications ..................................................... 88
Warranty Policy .................................................. 90
Statement of FCC Compliance ........................... 93

LCD Panel Indication

Viewfinder Indication: Frame Counter (p.22): Film Speed Information (p.24): Film Status Information (p.24): Battery Exhaustion Warning (p.15): Imprinting Exposure Data Information (p.64)

LCD (Liquid-Crystal Display)
When the LCD is exposed to high temperatures
over approximately 60°C it may blacken, but when
the temperature normalizes, it should return to normal.

: 3-point AF Frame (p.34): Spot Metering / Focusing Area (p.56, 59): Shutter Speed (p.42, 45, 47, 49): Aperture Value (p.42, 45, 47, 49): Flash Status Information (p.68): In-Focus Indicator (p.36): Exposure Compensation (p.52): Bar Graph(p.49, 52): AE Lock (p.57)

3

Names of Working Parts

4" AF mode selector (p.33, 58)## Exposure compensation dial (p.52)$ Exposure compensation dial release"$button (p.52)% Auto bracketing selector (p.53)

5& Hot shoe (p.68)%' Shutter speed dial release button

4&3'( Lens information contacts) Lens unlock button (p.16)* Preview lever (p.74)+ Drive mode selector (p.34, 38, 39)

2, Shutter release button (p.20)(1- Shutter release socket (p.51). Up / down buttons)

0/*+.
-/ AE lock button (p.57)
0 Main Switch (p.14)
1 LCD panel (p.3)
2 Metering mode selector (p.31, 55, 56)
3 AF frame selector (p.34.59)
4 Diopter adjustment ring (p.28),5 Shutter speed dialNames of Working Parts

56 Battery holder release knob

6

7 External power supply socket (p.13)

78 Tripod socket (p.35)
9 Vertical tripod socket (p.35): Multi-exposure switch (p.40)

A8; X-sync socket< Strap lug (p.11)= Film holder (p.18)@> Film holder release knob (p.18)? Mid-roll wind-up button (p.26)@ Electronic cable release socket (p.51)?
9A Battery holder (p.12)<:>;=<6FOR SAFE USE OF YOUR CAMERA

Although we have carefully designed this camera for safe operation, please be sure to follow precautions
given on this page.

WARNING This mark indicates precautions that, if not followed, could result in serious injuries to the operator.
CAUTION This mark indicates precautions that, if not followed, could result inminor or medium injuries to the operator or damage to the equipment.
WARNING• Wrapping the strap around your neck is dangerous.
Make sure that small children do not get the strapcaught around their neck.
• Do not look directly at the sun through the camera, as
viewing the sun for an extended period may damage
your eyes.

CAUTION• Never try to disassemble, short or recharge the battery. Also, do not dispose of the battery in fire, as it
may explode.
• Remove the batteries from the camera immediately ifthey become hot or begin to smoke. Be careful not toburn yourself during removal.

Precautions for Your Camera
Your Pentax camera is a high-precision mechanism. Handle it with great care.
Precautions when taking pictures• Do not use the camera where it may come in contact
with rain, water, or any other liquid, because the camera is not weather, water, or liquid resistant. Should
the camera get wet from rain, splashing water, or any
other liquid wipe it off immediately with a dry softcloth.
• Do not drop the camera or allow it to hit solid objects.
lf the camera suffers a shock or impact, take it to a
Pentax service center for inspection.
• Be careful not to subject the camera to strong vibrations, shock or pressure. Use a cushion to protect thecamera when carrying it in a motorcycle, car, boat,etc.
• Condensation on the interior or exterior of the camera may be extremely harmful to the camera mechanism as it may cause rust. Furthermore, if the camera
is taken from warm temperature to a subfreezing one
or vice versa, the formation of ice crystals may causedamage. In such a case, put the camera into a caseor plastic bag so that temperature difference is minimized. Do not remove it from the bag until temperature has stabilized.

7• Regular size color prints may cut off what appears on
the extreme edges of the film frame. Compose yourpicture with a margin of safety at the edges.
Precautions for storage• Avoid leaving the camera for extended periods inplaces where the humidity and temperature are veryhigh, such as in a car.
• Do not store the camera in a closet with mothballs orin an areas where chemicals are handled. Store it ina place with good dry air circulation to prevent thegrowth of fungus.
Precautions for proper care
• Never touch the shutter curtain or mirror with yourfinger or any other object.
• Use a blower and lens brush to remove dust accumulated on the lens or viewfinder.
• Never use solvents such as paint thinner, alcohol orbenzene to clean the camera.
• Electrical problems may often be caused by water,
dirt or dust at points of electrical contact. Also checkfor battery leakage, traces of dirt or grease, or corrosion due to salinity or gas. If you cannot correct theproblems, have your camera inspected at a Pentax
service center. Repairs of this nature are not covered
under the terms of the warranty and charges may beassessed.

8
Other precautions• The temperature range at which this camera functions properly is 50°C to -10°C (122°F to 14°F).
• A camera which has been submerged in water usually cannot be repaired. If such an accident shouldoccur, it is advisable to contact a Pentax Service
Center immediately.
• To maintain optimum performance, it is recommended that the camera be inspected every one or
two years. If the camera has not been used for anextended period, or is being prepared for an important photographic session, it is recommended thatyou have the camera inspected or test shoot with it.

• Repairs deemed necessary due to usage of thisproduct in an industrial or commercial application
may not be covered under the terms of the Pentaxwarranty.
• The PENTAX warranty provides only for the repair ofdefects in materials or workmanship. Damage of any
kind cannot be repaired at no charge under the termsof the warranty. If the difficulty is caused as a direct
result of the product being used in conditions as outlined in this manual, charges will be assessed and a
repair quotation will be provided.

Precautions for Battery Usage

9• Use six 1.5V AA size alkaline, or lithium batteries.
• Misuse of the battery can cause hazards such as leakage, overheating, explosion, etc. The battery should be
inserted with the "+" and "-" sides facing correctly.
• Battery performance may be temporarily hindered in low temperatures, but will recover in normal temperatures.
• Keep a spare battery on hand for replacement convenience when shooting outdoors or while traveling.
• Replace the batteries at the same time. Do not mix battery brands, types or old batteries with new ones. As this may
cause explosion or overheating.