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12-17-2010, 08:25 PM   #1
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Zetagon Lens.

I was recently given a box by an elderly friend. The box contained, to my surprise a Zetagon 135/3.5 lens and a set of extension tubes.

This lens, cosmetically, is in dreadful condition. It appears it has been kicked along a concrete path or similar.

However, it fitted onto a m42 Pentax fitting. As the glass was in good order, I decided to give it a test run.
Anybody know anything about Zetagon lens?


The results :

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12-17-2010, 08:51 PM   #2
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Bruce, it might be a good idea to post some pics of the lens. More then likely there is a 3rd party manufacturer involved and a bit of badge engineering.
12-17-2010, 09:28 PM   #3
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Here you go, johnno, such as they are. If the lens looks rough, it is all that and then some.
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12-17-2010, 09:49 PM   #4
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Looks like it might be a T mount lens with 3 screws evenly spaced around the silver ring at the base to hold the T to M42 adaptor on?

12-18-2010, 11:32 AM   #5
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That seems rather logical. I didn't think of the T mount theory. I am just intrigued about this lens.
Thanks.
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