i purchaced this lens and found it to be well built.after some testing i found it to front focus so bad that i couldn't adjust it on my K20D with the in camera focus adjuster.I got the goal for the U.S. site in the body K20D Sigma. 20 min later they gave the lens back and now it is as sharp as my pentax DA* lens.I think this lens, the price jump. if you have a problem sigma will back it up.I made two this Sigma lens is the second time, less than one hour and a half walk to work perfect lens..
List Price: : $569.99 ( 0 ) ( 0 )
update price on 2009-12-13
resource : http://digitalcameraelectronics.info - Digital Camera Electronics
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