Archived posting to the Leica Users Group, 2004/07/13

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Subject: [Leica] Why a digital M
From: jshul at (Jim Shulman)
Date: Tue Jul 13 08:38:41 2004

Adapters can be an ideal bridge, as with the LTM to Bayonet example, but
only under a limited set of circumstances:

1. The new model was specifically designed to accept the older technology.
In the case of Leica, they specifically designed the bayonet mount to be
larger than the LTM version--just for the purpose of using an adaptor with
older lenses.  At that time, Leica controlled all aspects of the new model's
design--they didn't have to outsource such items as sensor chips and
software, including these to their needs.

2. The adapted technology isn't radically different from the older
technology.  In the case of LTM to bayonet lenses, only the lens mounts
differed.  The lenses themselves were the same effective focal lengths; the
rangefinder mechanisms were similar (if a lot more convenient with the M
camera's combined rf/vf mechanism), the film area was the same, and the
cameras used the same bottom-loading, 35mm cartridge film.  The further you
stray from the older technology, the sillier the adaptation can appear.  

Most adapters remind me of a middle-aged lady in the junior sportwear
department.  Sure, honey, you do have the physical ability fit into that
vinyl skirt, but....

Jim Shulman
Bryn Mawr, PA

PS.  Oh, Rollei wasn't immune to the same treatment:  anyone ever try to
shoot 35mm film with Rolleikin-adapted Rolleiflex?  That's a barrel of

Replies: Reply from jshul at (Jim Shulman) ([Leica] Favorite Adaptors from Leica)
In reply to: Message from robertmeier at ( ([Leica] Why a digital M)