>1.) the performance is terrible at f/2.
Hi Priit,
I have two versions of this Vivitar lens (both made by Kiron, as you
deduced from the "22" serial number). The earlier one is
single-coated and can be ID-ed easily because the front rotates as
you focus. Yes, wide open the performance of this is pretty rotten.
But there is a later version, multi-coated, with a non-rotating
front--which is much improved wide open.
Unfortunately, guess which one has the stuck diaphragm...
cheers
--Ross
~~~~~~~~~~~~~~~
Ross's photo gallery:
http://flickr.com/photos/vox
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