Yup, the ProOptic when you look at the body, the gold lettering on it and the elements description s it is a Tamron. And the very knowledgable guy in the shop (in LV, NV) told me about it. It was a dead giveaway who made it.
That's cool. I have the Sigma. The Tamron looked pretty good too but slighty more expensive.
I got the cheaper one with the foam grip and no knob but it does have the cool magnetic quick mount. Should suit my simple needs. Also, I think the one you have includes a second mounting option/arm attachment?



