Archived posting to the Leica Users Group, 2012/11/09

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Subject: [Leica] 6 bit permanent flange adapters: has anyone tried one?
From: john at mcmaster.co.nz (John McMaster)
Date: Sat, 10 Nov 2012 07:04:37 +0000
References: <529757698.4011201352526882403.JavaMail.root@dsmdc-mail-mbs12> <747344463.4011221352527056248.JavaMail.root@dsmdc-mail-mbs12> <04ff01cdbf0a$308c1f40$91a45dc0$@verizon.net> <80F9701439F20347874CE5E4E03C22E99C9F8614@WHIZZMAIL02.whizz.org> <051001cdbf11$6ec3fe20$4c4bfa60$@verizon.net>

Old lenses that can be 6-bitted? The 75mm Summilux and f1.0 Noctilux have 
six screws but lose one, not sure how many other older lenses can have their 
flange converted, I know the 35mm Summilux cannot.

John

-----Original Message-----

Nope.  Older lenses, have 5 screws.  I counted. 

Frank Filippone
Red735i at verizon.net


-----Original Message-----

All lenses are 6 screw, just there are two different layouts and one style 
loses a screw when 6-bitted...

john

-----Original Message-----

Gene.. you order the flanges for the FL of the lens in question....


Remember to count the number of flange screws..... the correct number is 
either 5 or 6 screws.

BTW the screwdriver to use is available through Amazon.com ... order the set 
of small Phillips head screwdrivers made by WIHA.  About $20 for the set...

Frank Filippone
Red735i at verizon.net

You need the correct mount with the right tab to identify the lens data 
also.  I know, I bought a new 21 Elmarit Asph M back in '08 and it was 6 bit 
coded at the factory, it would not register the lens data when mounted on my 
M8, it did not bring up the correct set of frame lines (yes I know the M8 
does not have frame lines for the 21, but it does have to bring up the 28/90 
lines for the data to be recorded, manually selecting them with the frame 
lever made the data show up).  At Photokina, I had the Leica tech guys 
looked at it, and it had the wrong mount, but the correct code.  Evidently 
it had the old 21 Elmarit Asph mount. The older mount does not have the 
correct cam on the mount, evidently they changed it when the 6-bit coding 
was applied, and my copy did not get the changed mount cam when coded at the 
factory.  Had it fixed under warranty and now works just fine.  So a 
universal mount with depressions cut into them will not work unless the cams 
on the mount are correct
  for the lens to be coded.

Cheers,
Gene

I ran them for a while before getting genuine 6-bit adaptors at Solms. I 
guess it depends on the lens, more likely to work on a slow wide than a 75mm 
Summilux as the quality control may not be there. It is a reversible process 
if you do not like what has changed and on some lenses only five screws will 
go back in as one is under the 6-bit code.

john

-----Original Message-----
From: lug-bounces+john=chiaroscuro.co.nz at leica-users.org
[mailto:lug-bounces+john=chiaroscuro.co.nz at leica-users.org] On Behalf Of 
Lew Schwartz

Just saw these on eBay. You actually remove the rear plate from your lens 
and replace it with one of these. Then you look up the lens code and fill in 
the counter sunk depressions with (I guess) black enamel or magic marker.
The idea is that by having actual depressions to fill in, they won't wear 
off like other diy solutions.


Replies: Reply from Frank.Dernie at btinternet.com (Frank Dernie) ([Leica] 6 bit permanent flange adapters: has anyone tried one?)
In reply to: Message from grduprey at mchsi.com (grduprey at mchsi.com) ([Leica] 6 bit permanent flange adapters: has anyone tried one?)
Message from red735i at verizon.net (Frank Filippone) ([Leica] 6 bit permanent flange adapters: has anyone tried one?)
Message from john at mcmaster.co.nz (John McMaster) ([Leica] 6 bit permanent flange adapters: has anyone tried one?)
Message from red735i at verizon.net (Frank Filippone) ([Leica] 6 bit permanent flange adapters: has anyone tried one?)