Your Nemesis lens

Started 3 months ago | Discussions thread
evogt500 Senior Member • Posts: 1,549
Re: Your Nemesis lens

Vivitar Series-1 28-90mm F2.8-3.5.  Taken it apart multiple times because of the something is making the corners irregularly soft.  All elements are clean and it the right orientation.  I have the service manual and still can't figure out what's wrong with it.  I suspect it has something to do with the zoom mechanism and not the optics, but there is no way for me to know.

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