Mamiya PRO 645 - Manual (Page 36)

6 x 4.5cm electronic focal-plane shutter SLR
Polaroid pack film (Polaroid 100, 600 series)
135 roll film in film cartridge
Film loading Daylight loading-interchangeable film holders with film speed dial available
Standard lenses
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Lens mount M645 bayonet mount (applicable to all M645 lenses)
Shutter Moving coil, electronic controlled focal-plane shutter
Shutter speed (Manual) 4 sec. - 1/1000 sec., B (T)
(Auto) 8 sec. - 1/1,000 sec. (when the AE Prism Finder FE401 is used)
Shutter release Electromagnetic release.
Selectable release lock or self-timer mode.
Mirror lock~up capability.
Viewfinder Interchangeable (Waist Level Finder N, Prism Finder FP401 and AE Prism Finder FE401
(Viewfinders for the M645 Super can be used)
Focusing screen Fresnel Lens, accessory screens available
(Same as the M645 Super)
Field of view