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Negative287
Guest
I've had no less than 5 different Sigma lenses and not one of them had Back Focus issues.
best of luck! yes, getting a good sigma needs some luck as their QC has very bad reputation.
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Cheers,
Soumya
http://www.flickr.com/photos/soumya_b5/
http://www.pentaxphotogallery.com/soumyabandyopadhyay