Tamron 28-75 Autofocus Problems?

[vcutag]

Has anyone ever had the autofocus malfunction on the Tamron 28-75 f2.8 XR Di? I just got mine two days ago from B&H, and just this afternoon the autofocus stopped working.

I didn't bang the lens, there were no jarring impacts or anything that would logically cause something like this. I keep it in a padded bag that's been on the floor in my office all day. I tested another lens in the camera, it's not the camera. I don't have another camera in which to test the lens.

It worked fine this morning, just two hours ago, but for some reason, it's not working now. Any suggestions?

[Cadwell]

AF/MF switch on the lens moved?

[Persian-Rice]

Take the lens off, switch the button back and forth, resetart the camera. I had this problem the first time I put it on my MKII, but after switching the MF/AF buton back and forth a couple times and resetting the camera, it worked.

[vcutag]

Take the lens off, switch the button back and forth, resetart the camera. I had this problem the first time I put it on my MKII, but after switching the MF/AF buton back and forth a couple times and resetting the camera, it worked.

Yeah, I've tried all of that, no dice.

How is B&H on returns? If I have to send it back to them, how long am I going to be out a lens? :(

[tim]

B&H were very quick and zero hastle to give me a refund when I returned a lens that I decided I didn't want after all. I expect their replacement service will be pretty good too.