Archived posting to the Leica Users Group, 2000/03/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Skip, I understand perfectly about that modification, short of modifying the profile on the focusing cam on the lens (as the bespectacled 35mm /M3 lenses were) there is no way to maintain correct rangefinder focusing with a pair of goggles on the front of the lens. Ask Reinhold Mueller, the engineer who did these mods (on 2 or more lenses) for Tom, he'll tell ya! Now Tom would say that there's little need for rangefinder focusing with a 21mm lens, and he'd be right, if that's what suits him. For myself, although I was most interested in having this mod. done, I forwent it as I figured I'd be one step forward and two steps back. Each to his own, best regards, Jem > ---------- > From: Skip Williams[SMTP:skipwilliams@pobox.com] > > Jeremy, > > You may not understand my recommendations. Tom A had a 21/3.4 Super > Angulon custom-fitted with the goggles from a 35/2 M3-era Summicron. He > also had the 21 modified so that it brings up the 28mm frameline on an > M6. So when you look through the finder, you see the 28mm framelines > expanded to the 21mm's angle of view. The rangefinder focusing is not > affected. Yes, it's a bit larger package, but not much more than the lens > > and a separate finder pair. > > Skip > > At 3/24/00 10:27 AM +0000, you wrote: > >Skip, > >But the drawback is the size of the lens package you're carrying around > AND > >the fact that you loose your rangefinder focusing except at infinity! > > > >I'd certainly prefer a dedicated w/a Leica, but the difficulty might be > the > >correct triggering of the frames with older lenses. As there was never a > >defined setting for their frame triggering lugs I suspect that 21 and > 24mm > >lenses might trigger a variety of framelines. > >If we work on the basis that there are only 3 positions available for > >frameline triggering it follows that if we see the range as 21 - 35 to > >include 24 and 28, then there are 4 focal lengths to look after, as on > the M4 > ------SNIP------- > > > > > > > > ----------------------------------------------- > Skip Williams > Westfield, NJ > skipwilliams@pobox.com > http://www.skipwilliams.com > ----------------------------------------------- >