645DF Specifications

Camera Type: 6 x 4.5 cm format, electronically controlled focal-plane shutter, TTL multi mode AE, AF single lens reflex
Max. Image: Size 56 x 41.5 mm (actual image)
Compatible digital backs: Phase One M645 mount (P, P+ and IQ1, IQ2, IQ3), Mamiya M series, Mamiya ZD Back series
Lens Mount: Mamiya 645AF Mount (645 non-AF series lenses can be used with a microprism focusing screen and the focus assist mark during manual focusing; AE metering is possible with an optional viewfinder screen and with spot metering and stopped-down exposure
Viewfinder: Fixed prism viewfinder magnification x0.71; built-in diopter adjustment (-2.5 to +0.5, optional diopter lenses provide adjustment ranges of -5 to -2 diopter or 0 to +3 diopter); built-in eye-piece shutter
Focusing Screen: Interchangeable through the lens mount. Specialy designed matte screen (standard), grid matte screen and screen for M645 lens.
Field of View: Approx. 94% (percentage of actual image viewed)
Auto focusing system: TTL phase difference detection device: CCD line sensor (I + I shaped), operating range: EV -1 to 18 (ISO 100)
Focus area: Displayed on viewfinder screen (focus area: center area of 10.8 x 3.6 mm), two switchable AF ranges (normal focus or spot focus)
AF infrared beam: Activates automatically under low light/ low contrast. Range: approx. 9 m (with AF 80 mm F2.8 lens); ON, OFF selectable
AE lock: With AEL button or half-press shutter release button in auto focus, single mode
Exposure Modes: Aperture priority AE, Shutter speed priority AE, Programmed AE, Manual, Electronically controlled bulb and time
Shutter speed/Aperture steps: Shutter speed and aperture both can be set in 1/3 or 1/2 steps; electronic dial lock
Metering Mode: TTL full-aperture metering; Center-weighted average (A), Spot (S), Variable ratio (A-S auto)
Metering range: EV 2 to EV 19 (With ISO 100, 80 mm F2.8 lens)
Exposure compensation: +/-3 EV or +/-5 EV, selectable
Shutter: Electronically controlled vertical metal focal plane shutter. Compatible with the lens shutter LS series lenses
Shutter speed AE: AE: 30sec.̃1/4000sec., Manual: 30sec.̃1/4000sec.(1/3･1/2steps), X, Electronically controlled Bulb and Time. Lens shutter : 1/800sec. to 1sec.
Auto-bracketing: Set using Auto bracketing button/multiple exposure button
Flash synchronization: X contact (sync. speeds : 1/125 sec. or slower when the focal plan shutter in use, 1/800sec.̃1sec. when the lens shutter in use)
Flash control: TTL direct flash control, supports Metz SCA3002 system (with SCA3952 Adapter)
Mirror-up shooting: Possible using drive mode dial
Cable release socket: On shutter button
Remote-control terminal: On side of body; electromagnetic cable release
Self-timer: 0.5 to 10 sec. is selectable by the second, 10 to 90 sec. is selectable by units of 10 seconds, 2 to 10 min. is selectable by the minute while 10 to 60 min. is selectable by units of 10 minutes.
Depth-of-field confirmation: Possible with preview button
Tripod Socket: U 1/4 inch and U 3/8 inch included
Power Requirements: Body: 6 AA-size batteries (alkaline, lithium, nickel-metal hydride or nickel-cadmium batteries)
External power socket Insulated: external battery case can be connected
Size, weight: 153(W) x 128(H) x 152(D) mm, 1,030 g (w/o battery)