The lens arrived. One thing I didn't ask about was the lens cap.
I was hoping that the outside diameter of the lens would be 42mm
and that one of my spare imitation Leica push-on caps would work.
The aperture ring is in fact 42mm. The Leica caps fits but won't
stay on very firmly because the metal is too thick to slide in
between the aperture ring and the outer focal ring. If anyone is
aware of any low-cost caps that will do the job, please let me
know.
The lens itself turned out to be a good one. The following links
are for two test shots with Iflord Delta 100 and PMK development
and of the lens itself.
I also started a Flickr group for the 50mm Tessars in Contax
RF-mount. If anyone has any photos to contribute, please join:
All the best,
Iain
Em 02/08/2022 07:57, Nick Dando via
groups.io escreveu:
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Heliopan does a good range of collapsible rubber lens hoods in a
lot of different diameters and I¡¯ve used a 24mm hood on my
Rollei 35. Fotoimpex in Berlin list a 25.5mm hood as something
that they can order.
?
Iain,
The slip on lens hoods have slits in them that allow you
to push in some sections to tighten the hood enough.
However they
are susceptible to being knocked off. The only thread bon
your lens is the 25.5mm. A smaller lens hood is preferable
as they
allow you to set the f-stop without removing the hood as a
larger one would force you to do. The Canon hood you
mention, if
it fits tightly enough would in my experience allow you to
turn the hood and aperture ring together to set your
f-stop. Of
course you have to set your f-stop before focusing or you
will lose focus. Also be careful not to collapse the lens
while setting
your f-stop this way.
Bill
On Tuesday, August 2, 2022, 07:02:08 PM GMT+9,
acousmetre
<acousmetre@...> wrote:
Thanks Bill. That's good that there are two
filter threads (i haven't yet received my lens so
I'm unfamiliar with it) as it gives me few more
options. Maurice kindly sent me by private email
the catalogue images that he tried to post on the
forum. As you say there are two types, the slip-on
and also from the catalogue, the "telescopic lens
hood for 2-inch lens". I did find two of the
latter for sale online, but these will be too
expensive for me to import, unfortunately. Maurice
was also of the opinion that the slip-on hood
might not fix firmly enough to the Tessar. I found
locally a Canon lens hood for 42mm OD lenses with
a screw tightener. This might work and is
inexpensive, so I'll likely try it.
All the best,
Iain
acousmetre