I hate to be a spoil sport ... oh, c'mon ... but, TAMRON has really been a litltle more than annoying with some of the QC issues I have been privy to (by buying the lenses) and I just wanted to know if other folks were seeing the same kind of issue.

I was wondering if anybody has the Tamron SP AF 28-75 f2.8 lens. I have the KM version of it and I love the optical quality a great deal. However, I was wondering how many rotations the AF screw has on the Tamron vs the KM. Can anybody tell me how many screw turns the Tamron 28-75 f2.8 has? I was thinking of getting it as a back up lens and I wanted to know if there was a difference in the AF gearing. The KM AF 28-75 f2.8 has in the order of 3-1/3 screw turns if anyone was wondering.

Regards,
Niko