purchased this unit in good faith, having been reassured by Amazon.ca that the unit was able to register for Tamron Warranty Registration, well it CAN NOT, this is a "gray marketed" unit,,, "Centre Drone" is not an authorized dealer of Tamron products.

The SP 150-600mm G2 (Generation 2) ultra-telephoto lens with upgraded optical performance enables handheld shooting with remarkable definition. This new lens builds upon the success of the current SP 150-600mm (Model A011) which Tamron first introduced in December, 2013, including better overall...

This lens does NOT produce images that are as sharp as (for example) the "industry standard" 70-200 f/2.8 Nikon lens, but it does produce a very good, very usable, sharp image. It takes more practice to get good images from this long of a lens than from a normal telephoto because the very narrow...

The Tamron SP 150-600mm f/5-6.3 Di VC USD G2 is a very good lens. For the money, it's a great lens. It's very sharp throughout its range, has effective image stabilization, quick autofocus, and is relatively light and handholdable for a lens of its focal length.

Use this lens for wildlife and sports

Great Features; Great Picture Quality; Simple Controls

This lens is head to head with the Sigma Sport 15-600mm. However, it handles much better than the Sigma, which is nose heavy at 600mm. I have been using the G2 Tamron since its introduction and it is my standard birding lens on my Nikon D500, hardly ever use anything else.

The next-generation Tamron SP 150-600mm f/5-6.3 Di VC USD G2 has mighty pulling power...