| Autofocus
3 point wide area AF
Spot AF
AF single shot with focus lock
AF servo with predictive
Manual, with focus indicator
Works down to EV -1 (at ISO 100)
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Metering System
Dual multi(6)segment
Centre weighted
Spot
1/1000 to 30 sec. shutter (auto) + B
Exposure memory lock
Exposure compensation (+/- 3.3 EV, 1/3 EV steps; +/- 3.5
EV, 1/2 EV steps)
ISO setting 6 to 6400 ISO
Auto bracketing (1/3, 2/3, 1 EV, or 1/2, 1, 1.5 EV)
Depth of field preview
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| Exposure Modes
Program (with program shift)
Aperture priority
Shutter priority
Metered manual
Program TTL flash
Lens shutter mode
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Film Transport
Manual film loading via inserts
Auto advance to frame 1
Single or continuous advance (2.5 fps)
15 or 16 frames per 120 roll
32 or 33 frames per 220 roll
Multiple exposure
Self timer
Mid roll film advance
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| Other Features
Die cast aluminium chassis with glass fibre reinforced polycarbonate body
Mirror lock up, or mirror lock up with 2s self timer
Interchangeable focussing screens
On the film data recording (outside the image area)
Auto variable illumination viewfinder LCD
Viewfinder dioptre adjustment -3.5 to +1
Takes 6 x AA batteries (alkaline or lithium)
Fully compatible with existing 645 accessories
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Pentax Function
- [PF 0] Prints an identifying letter on film rebate
- [PF 1] Sets shutter speeds in half or whole steps
- [PF 2] Sets the metering timer between 10 and 30s
- [PF 3] Sets auto bracketing sequence
- [PF 4] Sets the self timer to 2s or 12s
- [PF 5] Sets 1/3 or 1/2 compensation steps
- [PF 6] Enables program shift
- [PF 7] Sets the frame counter to count up or down
- [PF 8] Enables film counter and frame counter display in viewfinder
- [PF 9] Choose 15 or 16 frames on 120, and 32 or 33 frames on 220 film
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| Film Data Imprinting
12-segment dot-matrix data imprinting system. Data imprinted out of image area.
Recordable data:
- 1: Total number of film rolls
- 2: Exposure frame number
- 3: Exposure mode
- 4: Shutter speed (Exposure time in bulb)
- 5: Aperture
- 6: Exposure compensation value
- 7: Metering mode
- 8: Lens focal length (only with SMC Pentax-FA lenses; approximate value for zoom lenses)
- 9: Focusing mode
- 10: ISO film speed
- 11: Use of AE lock and/or auto bracketing function
- 12:Use of flash synchronization.
Data imprinting cancellation (blank mode) available.
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Differences between 645N and 645NII
- 1: Mirror lock up, and 2s self timer with mirror up
- 2: Shutter speed setting in 1/2 steps
- 3: Exposure compensation and bracketing in 1/2 steps
- 4: 10 Pentax functions
- 5: Additional data imprinting outside frame area
- 6: Takes new type cable switches designed for MZ-S
- 7: New pc socket circuit for wider studio flash compatibility
- 8: New finish
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| Type
6x4.5-format autofocus single-lens-reflex camera with multi-mode TTL auto-exposure control.
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Film
- 1: 120 roll film (15 or 16 exposures)
- 2: 220 roll film (32 or 33 exposures)
Film loaded onto interchangeable film holder.
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| Image Size
56mm x 41.5mm.
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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 (usable in manual-focus mode only).
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| 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 F2.8 lens). Electronic timer with holding time of 10 sec.
Exposure mode:
- 1: Programmed AE
- 2: Shutter-Priority AE
- 3: Aperture-Priority AE
- 4: Metered Manual
- 5: Bulb.
AE lock: Activated with AE lock button. Exposure value memorized for approx. 10 sec.
Exposure compensation: ±3.3EV (1/3EV steps) or ±3.5EV (1/2EV steps).
Auto-bracketing: ±1/3EV,±2/3EV,±1EV (1/3EV steps) or ±1/2EV,±1EV,±1.5EV (1/2EV steps)
Depth-of-field preview provided.
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Shutter
Type: Electronically controlled vertical-run cloth focal-plane shutter.
Speed:
- 1: Auto: 1/1000 sec. ~ 30 sec. stepless
- 2: Manual: 1/1000 sec. ~ 6 sec.
- 3: Flash sync: 1/60 sec.
- 4: Bulb
- 5: Leaf-shutter lens: 1/8 sec.
Shutter locked with main switch off.
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| View Finder
Type: Keplerian telescope viewfinder with interchangeable Natural-Bright-Matte 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 ~ +1.0m-1 (diopters).
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Viewfinder LCD indication
- 1: Focus indicator
- 2: Shutter speed
- 3: Aperture
- 4: Flash status
- 5: Bar graph;
- 6: AE lock
- 7: Exposure compensation factor
- 8: Out-of-exposure coupling range warning
- 9: Over- and underexposure indication in Metered Manual.
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External LCD indication
- 1: ISO film speed
- 2: Exposure count
- 3: Film transport status
- 4: Battery level
- 5: Photographic data imprinting
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Film Handling
Automatic film advance with built-in motor.
Loading: Automatic first frame positioning via shutter release button.
Advance mode:
- 1: Single-frame advance
- 2: Consecutive advance (approx. 2 frames/sec.)
Automatic advance to film end after last frame (Mid-roll advance to film end possible via mid-roll wind-up button).
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| Auto Focus
Type: TTL phase-matching autofocus system with focus lock and predictive autofocus.
Effective illumination range: EV-1~EV18 (at ISO100).
AF frame:
- 1: 3-point AF
- 2: Spot AF.
PCV beep sound for in-focus indication (cancellation possible).
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Mirror
Swing-back instant-return mirror with mirror lock-up mechanism.
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Flash Syncronization
- 1: Hotshoe (X-sync contact and dedicated flash contact)
- 2: X-sync socket.
X-sync speed via hotshoe: 1/60-sec. automatically set at recharge completion of dedicated flash unit (X-sync speeds slower than 1/60 sec. can be used in Shutter-Priority AE and Metered Manual).
TTL auto flash: Available with Pentax dedicated-flash units via hotshoe.
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Pentax Function
- [PF 0] Prints an identifying letter on film rebate
- [PF 1] Sets shutter speeds in half or whole steps
- [PF 2] Sets the metering timer between 10 and 30s
- [PF 3] Sets auto bracketing sequence
- [PF 4] Sets the self timer to 2s or 12s
- [PF 5] Sets 1/3 or 1/2 compensation steps
- [PF 6] Enables program shift
- [PF 7] Sets the frame counter to count up or down
- [PF 8] Enables film counter and frame counter display in viewfinder
- [PF 9] Choose 15 or 16 frames on 120, and 32 or 33 frames on 220 film
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| Self-Timer
Electronically controlled self-timer with 12-second delay. Mid-operation cancellation possible.
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Photographic Data Imprinting (outside image area)
12-segment dot-matrix data imprinting system. Data imprinted out of image area.
Recordable data:
- 1: Total number of film rolls
- 2: Exposure frame number
- 3: Exposure mode
- 4: Shutter speed (Exposure time in bulb)
- 5: Aperture
- 6: Exposure compensation value
- 7: Metering mode
- 8: Lens focal length (only with SMC Pentax-FA lenses; approximate value for zoom lenses)
- 9: Focusing mode
- 10: ISO film speed
- 11: Use of AE lock and/or auto bracketing function
- 12: Use of flash synchronization.
Data imprinting cancellation (blank mode) available.
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| Self Timer
Electronically controlled self-timer with 12-second delay. Mid-operation cancellation possible.
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Film Speed
ISO6 ~ ISO6400
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| Power Source
6 AA-size batteries (alkaline or lithium batteries)
Battery life: Approximately 130 rolls of 120 roll film; approximately 100 rolls of 220 roll film (under in-house test conditions using alkaline batteries).
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Multiple Exposure
Via multi-exposure switch
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| Size & 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
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