I finally bit the bullet, as they say, and ordered a Schneider 210mm
Symar-S lens, for the rather low price of $159 US. The acme shutter on
my 215mm Ilex refused to work on my last still life shoot, but some
lighter fluid seemed to encourage some shutter action. And these are
exposures of some 25 seconds, so I only need T to work. Failing that I
do have a lens cap. Rather a shame about the shutter, given the glass is
an early mid 60s computer designed Tessar.
And while on monorail view cameras, I read a technical article which
explained that with movements you work on three different planes and
five vanishing points and this explanation was done with Euclidean
geometry. I had to start translating it to n dimensional topology (or
more so, topography.)
best cj
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