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Mamiya - 645DF SLR Medium Format Autofocus Digital Camera Body
B&H# MA645DF Mfr# 321-100
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The Mamiya 645DF SLR Medium Format Autofocus Digital Camera Body is an open platform, digital-only medium format camera that handles like a 35mm SLR, but with an image area almost 3 times as large (56 x 41.5 mm).

Using any of the 15 existing Mamiya 645AF system lenses (available separately), you have flash sync shutter speeds of up to 1/125s, and with any of 3 dedicated Mamiya lenses that have integral leaf shutters (available separately), you can achieve flash sync speeds up to 1/1600s. The 645DF's dual shutter system allows you to choose between the integral focal plane shutter and the leaf shutter when using one of these 3 lenses (the Sekor AF 55mm f/2.8 LS D, Sekor AF 80mm f/2.8 LS D, and the Sekor AF 110mm f/2.8 LS D).

The 645DF has aperture-priority AE, shutter-priority AE, programmed AE (PH, PL setting possible), and manual TTL metering, center-weighted average (AV), spot (S), and variable ratio (A-S auto) exposure modes, auto-bracketing,  and it uses the TTL phase difference detection method  for autofocus. Autofocus speeds are up to 30% faster than previous models.

The 645DF provides real performance upgrades for owners of nearly any brand of digital back, including Leaf, Mamiya, Phase One, and Sinar. There are 19 custom settings available for flexibility and control for those who are serious about their photography.

Medium format camera for use with digital backs having resolution from 22MP to 80MP
Image area 3x that of 35mm
Autofocus 30% faster than previous models
Performance upgrade for almost any digital back, including Leaf, Mamiya, Phase One, and Sinar
19 custom settings
Selectable dual shutter system--integral focal plane shutter or select lenses with integral leaf shutters
Dedicated lenses (available separately) with integral leaf shutters for sync speeds of up to 1/1600s
Camera Type 6 x 4.5cm format, electronically controlled focal-plane shutter, TTL multiple mode AE, AF single lens reflex camera for digital backs
Image Size 56 x 41.5mm (actual image)
Lens Mount Mamiya 645 AF Mount, compatible with M645 Mount (manual focus confirmation, focus aid, stopped-down exposure metering)
Shutter Touchscreen
Both the shutter speed and the aperture level can be set to 1/3 or speed and aperture 1/2 using the electronic dial lock function
AE 30 to 1/4000 sec. (1/8 step), manual 30 to 1/4000 sec. (1/2 or 1/3 steps), 1 min-60 sec. (1 step), X, bulb (Bulb, electronically controlled), Time, shutter curtain protection mechanism
Shutter Release Utilizes standard screw-in type cable release located on shutter button
Remote-Control Terminal: Located on the side of the body: Electromagnetic Cable Release RE401 is 5m and coiled; Electromagnetic Cable Release RE402 is 1m and is straight.
Self Timer With shutter release mode selector 2 to 60sec. (default setting: 10sec., can be set in 1sec. steps between 2 and 10sec., and in 10sec steps between 10 and 60sec.)
Flash Synchronization X contact point, 1/125 second (focal plane), 1/800 or 1/1600 second (leaf shutter)
Exposure Metering Aperture-priority AE, shutter-priority AE, programmed AE (PH, PL setting possible), and manual
TTL metering, center-weighted average (AV), spot (S), and variable ratio (A-S auto)
Exposure Bracketing Enabled with Auto-Bracketing button (2 or 3 frames selectable) , 0.3, 05, 0.7, 1EV step units selectable
Exposure Compensation Expandable to ±5 EV
Depth-of-Field Preview Preview Button on body
Viewfinder Fixed prism viewfinder magnification x0.71; built-in diopter adjustment (-2.5 to +0.5, optional diopter correction lenses provide adjustment ranges of -5 to -2 diopter and 0 to +3 diopter); built-in eye-piece shutter
Viewfinder Info Focus mark, defocus mark, warning mark, aperture value, shutter speed, metering mode (A, S, A/S), exposure compensation value (difference between set value and metered value) and flash ready/OK lamp with TTL Metz connection.
Focusing System TTL phase difference detection method; sensor: CC D line sensor (I+I type); operating range: EV0 to EV18 (ISO 100)
Power Source 6 AA-size batteries (alkaline-magnesium, lithium, nickel-hydride or nickel-cadmium rechargeable batteries)
Custom Functions 19 items
Dimensions 6 x 5 x 6" (15.3 x 12.8 x 15.2 cm)
Weight 2.3 lbs (1.04 kg) (body only)
Mamiya 645DF SLR Medium Format Autofocus Digital Camera Body
  • Front and Back Caps
  • Strap
  • 6 x AA Alkaline Battery
  • 2-Year Warranty