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Sigma Zoom - stiff AF
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PostPosted: Tue May 03, 2011 10:08 pm    Post subject: Sigma Zoom - stiff AF Reply with quote
Hi Folks,

I have a Sigma screw driver based Nikon AF-D zoom lens which is stiff and does not AF properly. Sometimes it gets stuck. The lens barrel feels squeaky and dry.

I wonder if anyone knows whether this can be fixed easily? Confused Should it be sent back to Sigma UK. May be not economical to fix?

Seems to be a common problem with Sigma zooms:
http://www.flickr.com/groups/sigma_lenses/discuss/72157600011040992/


PostPosted: Wed Jun 15, 2011 3:04 am    Post subject: Reply with quote
If you have a Sigma 70-300mm, then it is quite common, particularly on the lenses with the inbuilt motors.

It's a difficult fix, as you have to take much of the lens apart.
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