Re: [Leica] Re: [DR Summicron on the M6 Leica]

["Raimo Korhonen" <raimo.korhonen@pp2.inet.fi>]

I have an early M6 and all DR Summicrons I have tried have worked well.=
 But
as per manual the lens must be set to infinity before mounting.
Raimo
photos at http://personal.inet.fi/private/raimo.korhonen
my=F6s suomeksi

- ----------
> From: Doug Richardson <doug@meditor.demon.co.uk>
> To: leica-users@mejac.palo-alto.ca.us
> Subject: [Leica] Re: [DR Summicron on the M6 Leica]=20
> Date: 02. syyskuuta 1998 12:16
>=20
>=20
> Mary G. McGough wrote:
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> >will someone please tell me what the concensus and conclusion was in
> why some DRs will work on some M6s & not on others. Is it because of
> the 2 variations of the spectacles or in the shrouding of the early &
> later M6s ?
>=20
> I've lost the postings on this subject, so can't help you directly. I
> needed this info myself earlier this month when I was offered an M6
> which was was made at Wetzlar in 1987, but was unable to track it
> down.
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> However according to the "Early M6 vs Late M6" page on Stephen Gandy'=
s
> websight, in early M6s "The interior light baffle shroud behind the
> lens mount is round except on the top where the RF coupling mechanism
> is. The shroud has cut outs on four corners, corresponding to the fou=
r
> corners of the negative, apparently to allow the mounting of deeply
> recessed lenses. These cut outs may allow lens mounting that the
> earlier M6 bodies would not. Apparently this is why 50/2 Dual Range
> Summicrons will not mount properly on early M6 bodies."
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> This struck me as odd - looking at my Summicron DR, I could see
> nothing protruding behind the rangefinder cam which could possibly
> interfere with the internal shroud, though I suppose there was the
> possibility that vignetting could occur as the lens moved forward whe=
n
> used at short distances.
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> I spoke with a guy from Leica here in England, and he uses a DR on
> what he described as a "very early" M6 with no problems, but did say
> he's never used it in its near-focussing mode.
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> I tried fitting my my DR lens to the M6 before purchase, and it fitte=
d
> OK, and turns smoothly through both focussing ranges. However the
> camera (which has the cut-away shroud corners) needs a service to fix
> a meter fault, so I haven't run a film through it yet.
>=20
> Regards,
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> Doug Richardson
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