Pentax 645N brochure

Pentax 645N brochure
The world’s first autofocus medium-format SLR camera.
• 6cm 4.5cm medium-format image quality: Because of its
large image size (2.7 times larger than the 35mm format),
the 645N’s 6cm x 4.5cm format is far superior in image
quality to 35mm, producing true-to-life pictures with finer
details, higher resolution and better color fidelity.
• Compact, lightweight body with extra-rugged design
and low-noise operation: The 645N’s body is made of
rigid aluminum diecast and protected with a glass-fiber
reinforced polycarbonate coating approximately 1.7 times
thicker than a normal coating. As a result, the 645N is
extremely durable and resistant to shock and wear. In
addition, special mechanisms are incorporated in the
645N to ensure low-noise, low-shock operation – a
particularly important feature in wildlife photography.
• Effortless eye-level shooting: The 645N has perfected
the renowned optical system – originally developed for and
made famous by the Pentax 645 – by adding a highperformance viewfinder lupe. As a result, the camera
assures comfortable, fatigue-free eye-level shooting over
long periods in the field.
• High-precision autofocus system with SAFOX IV: The 645N
incorporates the Pentax developed SAFOX IV phasematching autofocus system to ensure accurate focusing
not only on subjects with vertical orientation but also on
those with horizontal orientation – even under such poor
lighting conditions as EV-1.
• Selectable focus frame: The choice of the wider “3-Point
AF” frame and the pinpoint “Spot AF” frame allows the
photographer to use the most suitable focus frame for
each subject and in every situation.
• Three focus modes: The 645N offers three focus modes
to choose from: “AF Single” activates the shutter only when
the subject comes into focus; “AF Servo” lets the user
release the shutter at any time; and “Manual Focus” lets
the user adjust the focus manually using the focus ring
of the lens. In the manual-focus mode, the focus indicator
in the viewfinder provides the focus status.
• Predictive AF: In the AF Servo mode, the 645N’s AF
system detects the subject’s movement (toward or away
from the camera) and “predicts” the optimum focusing
point at shutter release for pinpoint focus on the subject
on the move.
• Multi-mode exposure system: The 645N’s four distinctive
exposure modes allow the user to react effortlessly and
efficiently to every situation and create the desired visual
effect with ease. “Programmed AE” for adjustment-free
shooting; “Aperture-Priority AE” to emphasize the depth
of field; “Shutter-Priority AE” for sports and action
photography; and “Metered Manual” for maximum control
over exposure settings.
• Sophisticated metering system: The 645N incorporates
a newly developed “Dual Six-Segment” multi-pattern
metering system. Two sensors positioned at both sides of
the viewfinder measure the subject’s lighting condition of
two different areas: the wide sensor covers the entire
image field, while the narrow sensor monitors the light
reaching the central area of the image field. As a result,
the 645N can measure the subject’s lighting condition
with exceptional accuracy and efficiency. In addition to
the Dual Six-segment metering, the 645N also offers
the pinpoint “Spot Metering” and conventional
“Center-Weighted Metering” modes.
• Auto bracketing: With a single shutter release, this function
automatically takes three pictures of the same subject in
the order of normal, under- and overexposure. The desired
exposure level can be easily selected using the auto
bracketing lever.
• Exposure compensation: The function allows the
photographer to make minute exposure adjustment with
ease in 1/3 steps within a range of ±3EV.
• Memory lock: This function memorizes the subject’s lighting
condition for 10 seconds with a single push on the button,
allowing the photographer to re-compose the image freely
without changing the exposure level on the most important
element of the picture.
• Interchangeable focusing screens: The 645N incorporates
an acclaimed Natural-Bright-Matte focusing screen to
provide a sharp, bright viewfinder image. In addition to the
standard Center Spot Matte screen, the photographer
can also select the AF Split-Image, AF Microprism or
Cross-Lined Matte screen, depending on the purpose
or application.
• On-the-film data recording: To keep accurate track of
photographic data, the 645N lets the user imprint valuable
data (exposure frame number, exposure mode, shutter
speed, aperture, exposure compensation value, metering
mode, and lens focal length) at the bottom of the film just
outside the image area.
• High-speed motor drive: The 645N’s built-in motor drive
advances the film at the speed of 2.0 frames per second.
Thanks to the high- precision pulse-count film transport
mechanism, the spacing between frames is identical
and the number of frames which can be taken from one
roll of film has been increased from the 645 (16 frames
from the 120 film and 33 frames from the 220 film). This
motordrive also offers two film advance modes: “Single
Advance” to advance one frame for each release of the
shutter button and “Consecutive Advance” to successively
advance the film as long as the shutter release button is
depressed. In addition, the motor drive automatically
loads the film and advances it to the first frame, and winds
the film into the film holder to avoid accidental exposure
during film changes.
• Interchangeable film holders: The 645N uses exclusive film
holders compatible with those of the 645. So, by carrying
several film holders loaded with film, the photographer can
save a considerable amount of time for film changes.
• Simple-to-operate dial control system: Two large dials
located on both sides of the prism housing facilitate swift,
mistake-free operation, while other levers and switches are
ergonomically positioned for maximum ease of operation.
• Large LCD data panel: Located at the camera’s right
shoulder, the LCD data panel provides the photographer
with useful operational data at a glance in easy-to
understand letters, digits and symbols.
• Full information viewfinder display: An LCD data panel
located at the bottom of the viewfinder indicates a full
range of photographic data. Its bar-graph indicator is
especially useful for checking exposure status in the
Metered Manual mode. The brightness of the indication
is automatically adjusted according to the subject’s
illumination level.
• Depth-of-field preview: This function allows the
photographer to check the depth of field before taking a
picture, thus making it possible to create the desired visual
effect without failure.
• Multi-exposure: This function enables the photographer
to produce a unique, eye-catching image by making the
desired number of exposures on a single frame.
• Built-in diopter adjuster: The 645N’s viewfinder eyepiece
comes equipped with a built-in diopter adjuster to adjust
the viewfinder image for near - and far-sightedness within
a range between -3.5 and +1 diopters.
• Lithium battery compatibility: The 645N’s battery holder
takes six AA-size batteries. In addition to alkaline batteries,
lithium batteries, which offer a longer battery life and a
stable power supply at low temperatures, can also be
used. The Battery Pack 645 is available as an optional
accessory to keep batteries warm at freezing
• Self-timer: The built-in self-timer delays shutter release
by 12 seconds, allowing the photographer to become part
of memorable pictures. This is also useful for avoiding
camera shake in slow-shutter and bulb applications.
• New 645 autofocus lenses: For the 645N, Pentax
developed five SMC-Pentax FA autofocus lenses
to assure fast, stable autofocus operation. These
lenses are all treated with Pentax’s original
Super-Multi-Coating and incorporate a host of
advanced mechanisms to offer outstanding optical
performance and assure superb handling in the
field. They also feature new autofocus/manual-focus
switching mechanisms to improve manual-focus
accuracy and efficiency.
• Compatibility with conventional 645 lenses and accessories:
All existing SMC Pentax-A 645 lenses can be used
with the new 645N without any modifications (except for
autofocus operation). A wide variety of optional
accessories are also available to satisfy the photographer’s
need for special applications.
1. Depth-of-field Preview
2. Pentax 645 AF Mount
3. Lens Unlock Button
4. Shutter Release Button
5. Drive Mode Selector
6. Up Button
7. Down Button
8. ML (Memory Lock) Button
9. Main Switch
13 12
10. Metering Mode Selector
11. Metering Mode Index
12. Shutter Dial
13. Shutter Dial Lock Button
14. Auto Bracketing Index
15. Exposure Compensation Dial
16. Exposure Compensation Dial Lock Button
17. Auto Bracketing Lever
18. Hot Shoe
19. AF Frame Selector
20. Release Socket
21. Mid-roll Wind-up Button
22. Film Holder Release Knob
23. AF Mode Selector
24. Tripod-Socket
25. External Power Supply Socket
26. Battery Holder Release Knob
27. Battery Holder
28. Diopter Adjustment Ring
29. X-sync Socket
30. Multi-exposure Switch
31. Vertical Tripod Socket
6x4.5-format autofocus single-lens-reflex
camera with multi-mode TTL auto-exposure
(1) 120 roll film (16 exposures); (2) 220
roll film (33 exposures); (3) 70mm film
(approx. 95 exposures). Film loaded onto
interchangeable film holder.
Image Size
56mm X 41.5mm
Lens Mount
Pentax 645 AF mount (interchangeable with
Pentax 645 A mount). Applicable lenses: (1)
SMC Pentax 645-FA lenses; (2) SMC Pentax
645-A lenses (useable in manual-focus
mode only).
Exposure Control
• Metering system: TTL open-aperture
multi-pattern metering.
• Metering mode: (1) Dual six-segment
metering; (2) Center-weighted metering;
(3) Spot metering.
• Metering range: EV2~EV21 (at ISO100
with 75mm f/2.8 lens). Electronic timer with
holding time of 12 sec.
• Exposure mode: (1) Programmed AE;
(2) Shutter-Priority AE; (3) Aperture-Priority
AE; (4) Metered Manual; (5) Bulb.
• Memory lock: Activated with ML button.
Exposure value memorized for approx.
10 sec.
• Exposure compensation:±3EV
(1/3EV steps).
• Mirror & diaphram control: Swing-up-type
multi-coated quick return mirror. Position
controlled diaphram coupling mechanism
(except with leaf-shutter lenses).
• Depth-of-field preview provided.
• Type: Electronically controlled vertical-run
cloth focal-plane shutter.
• Speed: (1) Auto: 1/1000 sec. ~ 30 sec.
stepless; (2) Manual: 1/1000 sec. ~ 4 sec.;
(3) X-sync: 1/60 sec.; (4) Bulb; (5) Leafshutter lens: 1/8 sec. Shutter locked with
main switch off.
• Type: Keplerian telescope viewfinder with
interchangeable Natural-Bright-Matter
focusing screen (AF Center Spot Matte
screen as standard).
• Field of view: 92% vertical, 93% horizontal.
• Magnification: 0.76X (with 75mm lens at
infinity with -1 diopter).
• Diopter adjustment range: -3.5 ~ + 1.0
Viewfinder LCD Indication
(1) Focus indicator; (2) Shutter speed;
(3) Aperture; (4) Flash status; (5) Bar graph;
(6) Memory lock; (7) Exposure compensation
factor; (8) Out-of-exposure coupling range
warning; (9) Over- and underexposure
indication in Metered Manual.
Power Source
6 AA-size batteries (alkaline or lithium
• Battery life: Approximately 130 rolls of 120
roll film; approximately 100 rolls of 220 roll
film (under in-house test conditions using
alkaline batteries).
External LCD Indication
(1) ISO film speed; (2) Exposure count;
(3) Film transport status; (4) Battery level;
(5) Photographic data imprinting.
Multiple Exposure
Via multi-exposure switch.
Film Handling
Automatic film advance with built-in motor.
• Loading: Automatic 1st frame positioning
via shutter release button.
• Advance mode; (1) Single-frame advance;
(2) Consecutive advance (approx. 2
• Automatic advance to film end after last
frame (Mid-roll advance to film end
possible via mid-roll advance button).
Dimensions & Weight
150 (W) x 111 (H) x 117 (D)mm
(5.9" x 4.4" x 4.6"); 1,280g (45.2 oz.)
without batteries.
• Type: TTL phase-matching autofocus
system with focus lock and predictive
• Effective illumination range: EV-1 ~ EV 18
(at ISO100).
• AF frame: (1) 3-point AF; (2) Spot AF.
• PCV beep sound for in-focus indication
(cancellation possible).
Flash Synchronization
(1) Hotshoe (X-sync contact and dedicated
flash contact); (2) X-sync socket.
• X-sync speed: 1/60-sec. automatically set
at recharge completion of dedication flash
unit (X-sync speeds slower than 1/60 sec.
can be used in shutter-Priority AE and
Metered Manual).
Photographic Data Imprinting
7-segment dot-matrix data imprinting system.
Data imprinted out of image area.
• Recordable data: (1) Exposure frame
number; (2) Exposure mode; (3) Shutter
speed (Exposure time in Bulb); (4) Aperture;
(5) Exposure compensation value;
(6) Metering mode; (7) Lens focal length
(only with SMC Pentax-FA lenses;
approximate value for zoom lenses).
Electronically controlled self-timer with
12-second delay. Mid-operation cancellation
Film Speed
ISO6 ~ ISO6400.
Ordering Information:
15722 645N Black Body
26121 SMC-FA 645 75mm f/2.8
UPC Codes:
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