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Re: [Rollei] Why the 6-element lens for 3.5Fs

Marc James Small wrote:

> Why would this have entailed a change in mount?  The 1600F and 1000F
> the same BM.

I'm sorry. I meant "mount" as in:

A) "a contraption to hold one or more lens elements in such a way that they
are in a spaced optical alignment in accordance with the design of the
compound optical lens"

and not "mount" as in:

B) "a mechanism for securing a lens mount as described in A) to a suitable

The Zeiss Tessars are in a different "type A) mount" than the Zeiss-Opton
Though they indeed do share the "type B) mount".