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09-09-2009, 12:57 AM   #1
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Join Date: Jul 2009
Location: Russia
Posts: 343
Anyone disassembled 70-300mm Sigma?

As I have Sigma under Quantaray name with non-working zoom barrel.
I disassembled it from the back and small plactic piece (broken) falled from it.
Zoom barrel work only one way (is you zoom fully by hand-pushing front group, you are able to zoom back normally).
Interesting thing is that it is quite easy to adjust infinity on this lens as it have three metal spacers. I suppose they are for this task.

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