Hulcherama back focal length / register

[Willem-Jan Markerink <w.j.markerink@xxxxx>]

Mmm....I was checking the registers for the various Hulcherama lenses 
(Hassy, Mamiya and Pentax, Kowa added out of personal interest....can 
one buy generic lens plates Gary?):

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hasselblad 500/2000	bayonet				 74.90

Kowa Six/Super 66	breech lock			 79.00

Mamiya 645		bayonet				 63.30

Pentax 645		bayonet				 70.87
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Now Canon EOS register is 44.0mm....this means less than 20mm difference with 
Mamiya....
Olympus also has a 24mm shift lens, with an even larger register 
(46mm), and a much smaller diameter (small enough to fit inside an 
EOS mount).
All this said & done....I can't help wondering how much 'inboard' 
depth one could create by stripping the very rear of such a lens, and 
protrude the lens *through* a Mamiya lens.
Doesn't seem impossible IMNSHO....:-))

Thanx for letting me ramble....;-))



--                 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]