Pentax Bracket 645 User manual

PENTAX
OPERATING MANUAL

Welcome to the Fantastic World of
Pentax Multi-mode Photography with
Medium Picture Format!
The Pentax 645, our latest development in the area
of the medium format SLR, promises a superior
6 X 4.5cm result with 120/220 or 70mm film.
Made possible through our vast experience and
technology accumulated over the years, the new
multi-mode 645 camera allows accurate exposure
control utilizing the full range of available modes;
Programmed AE, Aperture-priority AE and Shutter-
priority AE, Metered manual mode and TTL auto
flash control.
The Pentax 645 is a professional camera possessing
a number of highly sophisticated features; a built-in
automated film wind along with digital indications
of various photographic information through LCD
(Liquid Crystal Display) viewed from the outside
of the camera, and clearly visible LED (Light
Emitting Diode) indications within the viewfinder.
To obtain optimum results, it is recommended
that this manual be thoroughly read and understood
prior to actual use of the Pentax 645.

CONTENTS
Description of parts.2~5
Inserting batteries.6~7
Attaching/removal of Grip 645.8 ~9
Lens mounting/interchange.10—11
Attaching Shoulder Strap.12
Film Holders 645 and attaching/detaching.13
Shutter release without film in camera.14
Problems and remedial solutions.15—16
Loading/unloading.18—19
C/S Switch, Main Switch and Shutter
Release Button.20
LCD indication for exposure count.21
Operation panel and LCD Window.22—23
Film speed adjustment and Memo Holder.24—25
Viewfinder display.26
LED mode warnings in viewfinder.27
Eyecup 645/diopter adjustment.28—29
Focusing procedure/recommended camera
holding positions.30-31
Switching to "A" (auto) and setting
photographic mode.32—33
Photographic mode with the aperture set
at "A" (auto).34
Programmed AE mode.34—35
Aperture-priority AE mode.36—37
Shutter-priority AE mode.38—39
Photographic modes with the aperture
set at appropriate f/stops.40
Aperture-priority AE mode.40—41
Metered manual mode.42—43
Utilizing60 (1/60sec.) and B (Bulb) position...44-45
Utilizing Pentax dedicated flash units.46-47
TTL auto flash operation.48
External auto flash operation.49
Dedicated flash precautions.50
Using ordinary flash units.51
Programmed AE diagram, meter coupling and
shutter/aperture coupling range.52-53
Exposure compensation.54-55
Depth-of-field.56—57
Depth-of-field preview.
Multiple exposure.
Tripod support.
Infrared index mark.
Interchanging focusing screens..
Interchangeable focusing screens
Manual film wind.
Maintenance
66-67
Specifications..
Warranty policy
68-69
70-71
1

DESCRIPTION OF PARTS

5

BASIC PREPARATION
Use six AA batteries of the types mentioned below
in accordance with the instructions on the battery
case;
• Manganese batteries
• Alkaline batteries
• Ni-Cd rechargeable batteries (a charger needed)
(New batteries are packed at the time of
shipment, but because of inherent self-
discharging, performance gradually
deteriorates as time goes by. In such a
case, replace the packed batteries with
brand-new ones.)
INSERTING BATTERIES (GRIP 645)
1 2
1. Prior to placing of the batteries into the grip
section, turn off the main switch located on the
grip. Then remove the battery holder by pushing
battery holder release button in direction of the
arrow.
2. Install six 1.5V "AA" batteries in accordance
with the diagram located in the battery chamber.
Make sure proper battery polarity (+ and -) is
maintained. Angle the batteries into the holder,
placing the battery onto the spring plate
(contact) first, then push the other end into
position. The batteries are easily removed by
pressing the battery in the oval cutouts on both
sides of the battery holder.
6

3. As shown in the illustration, battery holder
should be inserted into the grip; depressing the
same will insure firm locking. Confirm that the
unit is securely locked into position.
4. Once batteries are properly in place within the
grip, the LCD indicator will appear in the LCD
window as illustrated. Should the LCD fail to
appear, batteries are exhausted or are improperly
inserted or the grip is not securely attached to
the body.
5. A common battery source is used for LCD
display and motor drive. For battery check,
confirm the motor drive function which is
affected earlier than that of LCD display.
Precautions
• Make sure that polarities of all the batteries
are properly aligned. Incorrect polarity
alignment may cause unexpected damage to
your equipment.
• Replace all batteries at the same time. Do not
mix battery brands, types or old batteries with
new ones.
• Remove batteries when not using your equipment
for a long time. Batteries may tend to leak if left
too long in your equipment and may cause
serious damage.
• Never throw used batteries into fire since they
may explode, causing unexpected damage or
injury to you.
• Store batteries in a cool place, and out of reach
of children.
• Batteries are very sensitive to cold and
performance tends to deteriorate at temperatures
near freezing point. Performance is restored as
soon as batteries are brought back to room
temperature. Keep a set of batteries in a warm
pocket when shooting in cold weather to
substitute if the others no longer perform well.
Be sure to turn off the main switch to avoid
unexpected battery drain, when putting your
camera into a bag.
7

ATTACHING/REMOVAL OF GRIP 646
1
Confirm that the main switch located on the grip
has been turned to OFF position.
Removal:
1. Using a coin or similar tool, completely
loosen the grip lock screw by turning the same
In the directiory opposite to the "LOCK" arrow
designation.
2. While simultaneously depressing the grip lock
screw, carefully pull the grip down, and
withdraw the same out to the side. The grip will
come away from the camera body.
8