Excerpt: (This is on my to-buy list ... hoping it's 5-stars ...)
There IS a firmware update so the lens now works with EOS M3 according to Tamron.
Here is a link to an updated news article (May 28, 2015) that includes the serial numbers that already include the firmware update:...
Excerpt: Great Lens, It covers Indore and outside very well. Used it for the last eight years, no problem.Since lately developed 'Error 99'.It is now under service.Please recommend a solution.Thank you.norton
Excerpt: I wanted a travel lens for my Sony Nex7 as I was tired of changing lenses on the run. The Sony lens that I was considering was too heavy and made my camera clumsy. I found this lens at the Tamron Expo exhibit and returned the following day for a second look. As soon as I held the lens it felt right.
Summary: Here are some preliminary observations as I have only had the lens a couple of days. A past issue that people have reported with these is that it does not work with the Sony Nex's panorama mode. However, the panorama mode works flawlessly with my lens purchased in early June 2012.
Summary: This lens is very sharp. The vibration compensation works very well. I'm very happy with this lens. I use it most of the time with my camera. Update 7/19/2014 This is my go-to lens. It has been used on these Sony Alpha Mirrorless Interchangable-Lens Cameras: NEX-5R, NEX-6, NEX-7, A6000 (ILCE-6000).
Summary: Overall, great lens. The limited/slow f stop could be better. f3.6 at 18mm and f6.3 at 200mm. This makes it primarily a day-time lens, however... Image stabilization is the best of the NEX lenses. It's almost sticky-like. Why is this not talked about more!?
Summary: I purchased this lens for my NEX-7. I purchased the all black, due to the fact it goes with my NEX-7. I've gotta say that I'm really impressed with the build quality, and performance of this lens! It, like all compromise lenses, covers a large range of focal lengths.