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Medium-Format Camera: 645NII

645NII
Type
  6x4.5-format autofocus single-lens-reflex camera with multi-mode TTL auto-exposure control.
Film
  (1) 120 roll film (15 or 16 exposures); (2) 220 roll film (32 or 33 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 (usable 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 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.
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.
Viewfinder
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).
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.
External LCD Indication
  (1) ISO film speed; (2) Exposure count; (3) Film transport status; (4) Battery level; (5) Photographic data imprinting.
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).
Autofocus
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).
Mirror
  Swing-back instant-return mirror with mirror lock-up mechanism.
Flash Synchronization
  (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.
PENTAX Function
  10 custom-programmable functions
Photographic Data Imprinting
  12-segment dot-matrix data imprinting system. Data imprinted out of image area.
Recordable data: (1) Camera body ID; (2)Total number of film rolls; (3)Exposure frame number; (4) Exposure mode; (5) Shutter speed (Exposure time in bulb); (6) Aperture; (7)Exposure compensation value; (8) Use of auto bracketing; (9) Metering mode; (10) Use of AE lock ; (11) Use of flash synchronization; (12) Lens focal length (only with SMC PENTAX-FA lenses; approximate value for zoom lenses); (13) Focusing mode; (14) Auto focus mode; (15) Auto focus frame; (16) Auto focus point.; (17) ISO film speed.
  Data imprinting cancellation (blank mode)available.
Self-timer
  Electronically controlled self-timer with 12-second delay. Mid-operation cancellation possible.
Film Speed
  ISO6 - ISO6400.
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).
Multiple-Exposure
  Via muilti-exposure switch.
Dimensions
  150 (W) x 111 (H) x 117 (D) mm (5.9" x 4.4" x 4.6")
Weight
  1,280g (45.2 oz.) without batteries

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