Summary: I was kind of nervous to buy this lens and worry that it might not be as good as some users had claimed. As soon as it showed up on my doorstep, I opened it up and put it on my Nikon D50. LOVE this lens! Would order again!
Summary: Basically, this is an old lens from Tamron. So it doesn't have built-in motor inside of the lens. Thus, most today's Newer modern dslr won't compatiable(such as D5100, 3100 etc. If you're on to this camera then get the AF-S or something has to do with built in motor otherwise it stated. I just got this lens for myself for use with fujifilm s1pro.
Summary: 36 years ago I bought my first Tamron lens for my Olympus OM-1, it was a 70-210mm with a NEW feature called Macro Zoom....36 years later things have changed in Lens construction materials...Plastic is everywhere but now we have better Glass and Coatings on the Elements so the trade off in construction materials seem to balance just fine for me. The Test Setup: I received my lens at 10:30 AM and by 11:30....
Summary: This lens is absolutely excellent for the price. I am planning to purchase one more. It works really well with my Nikon D7000. Although, if you’re planning to pair this lens with any Nikon DX sensor SLR without and internal focusing motor be prepared to manually focus. This lens isn’t for full frame/FX SLR’s and it doesn’t have an internal focusing motor.