Eu pesquisei e achei algo.
********* Fonte: Wikpedia************
http://en.wikipedia.org/wiki/MamiyaThe Mamiya 645 manual focus series
The M645 (discontinued) was manufactured from 1975 to 1987. Non-interchangeable back.
The M645 1000S (discontinued) was manufactured from 1976 to 1990. Non-interchangeable back.
The M645J (discontinued) was manufactured from 1979 to 1982. Basic entry-level camera, non-interchangeable back.
The Mamiya 645 Super (discontinued) was manufactured from 1985 to 1993.
The Mamiya 645 Pro (discontinued) was manufactured from 1993 to 1998.
The Mamiya 645 Pro-TL (current model) was first released in 1997.
The Mamiya 645E (current model) was first released in 2000. Entry-level camera, non-interchangeable back, popular among beginners.
The Mamiya 645 auto focus series
The Mamiya 645AF was first released in 1999.
The Mamiya 645AFD was first released in 2001.
The Mamiya 645AFD II was first released in 2005.
The Mamiya 645AFD III is on the market since June 2008 and is also available branded as a Phase One camera (known as Phase One 645).
The 22 megapixel ZD Back for the 645AFD II and, with an adapter, the RZ67 Pro IID, was announced at the 2006 Photokina. In March 2008, Mamiya announced new products 80 mm D lens, 150 mm D lens and 45-90mm D lens. These, along with the 645AFDIII, and an adapter to use digital backs with the RB camera series, will be available later in the year.
****** Fonte: Site na Mamiya *********
Pode baixar os manuais completos de cada modelo:
http://www.mamiya.com/customer-service-instruction-manuals-downloads-645.html"Customer Service \ Instruction Manuals \ Downloads \ 645
645AFD III Instruction Manual (2.56 MB)
645AFD II Instruction Manual (3.29 MB)
645AFD Instruction Manual Companion for Digital Photography (New!) (31 KB)
645AF Instructions (1.8 MB)
M645 Super (2.06 MB)
M645Pro (2.57 MB)
M645 Pro TL (2.45 MB)
M645 1000S (2.53 MB)
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E por fim olhe esse vídeo:
http://www.youtube.com/watch?v=8zFYt1_0FUE **************************************
Bricadeira.... Pergunte quando quiser.
Abraços!