[Leica] Heliar vignetting help ...

["David Freedman" <dpfreedman@worldnet.att.net>]

I recall seeing this subject addressed recently when I wasn't particularly
interested and now that I am, I can't seem to locate the messages in the LUG
archive. Hence this plea for help.

I recently purchased a Heliar and the first few rolls are showing what looks
to be pronounced vignetting in the lower left hand corner.  As I recall from
the earlier LUG messages, one possible "fix" for this is to rotate the mount
on the lens so that it lines up properly when screwed into the L-M adapter.
I do not have the Voigtlander L-M adapter (Bowers I think) and the lens is
indeed skewed by several degrees when screwed in.

Before I start loosening screws on the mount I was hoping that someone with
a better memory or filing system would kindly forward the relevant
information.

Profuse thanks in advance.

Dave F.