[rollei_list] Re: Leica and Contax
- From: Bob Shell <bob@xxxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Sun, 3 Apr 2005 18:56:40 -0400
On Sunday, April 3, 2005, at 05:14 PM, Richard Knoppow wrote:
> Early Nikons were _styled_ like the Contax but did not
> copy the internal mechanism. Nikon used the Contax type
> bayonet lens mount but the back focus is different so Contax
> and Nikon lenses are not interchangible, they don't focus
> right.
The back focus is the same. It is the pitch of the focusing helical
that is different. The lenses are completely interchangeable, but long
lenses will not focus correctly. For wide angles it is less of an
issue because depth of field generally covers up focusing errors.
Bob
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