Fed-50/3.5 Elmar+Bessa R?

[mike goldberg]

Hi All,

Is anyone using the Fed-50/3.5 Elmar type COLLAPSIBLE lens on
a Bessa R?

I've read that a few of our members here do, BUT...
that is a big BUT. An innovative way of keeping the central, collapsible
column away from the Bessa R's shutter curtains, must be found.

One member here, used 2 O-rings... the kind that one might buy in auto
parts or machine shops. I wonder about the ends of spring steel,
scratching the highly polished surface of the collapsible column?

I have another idea. Cut a narrow strip of leather, 4mm wide, and long
enough to go around the central, polished, sliding column of the 50/3.5.
Put in a stitch or two with strong black thread, and carefully put a bit of
epoxy over the stitched ends. I would NOT use super glue, because
this substance has a way of spreading or bleeding into places, you DON'T
want it to go 😱

Comments, ideas, feedback... very welcome.
Ciao, mike

 

[rbiemer]

Mike,
The O-rings are typically rubber or plastic so now worries about scratching.
I did use an Industar-50 on my Bessa and what I did was to find a rubber band that was wide and short. worked pretty well and I didn't need to permanently(or semi-permanently) glue it to the lens barrel.
I have seen heavy plastic tape suggested--the kind that the "Dymo Label Maker" uses. Hvaen't tried it my self, though.
Stuff like this(LINK follows):
Colored Embossing Tapes
Rob

 

[Xmas]

Leitz recommended dyno tape for the M5 and CL.

Noel

 

[mike goldberg]

Thanks, guys,
The Dymo label tape may not be a bad idea.
I'll know better with the lens in hand.
mike