Tamron SP 150-600mm F/5-6.3 Di VC USD for Canon DSLR Cameras (Tamron 6 Year Limited USA Warranty)

This is a good lens for the money, but ultimately I ended up trading it in for the new Sigma 150-600. Optically this lens was a very good performer and I have no complaints with it in that regard. The problem I had with it was the amount of AF fine tune adjustment that was needed at the 600mm end. For AF to achieve a shot actually in focus I had to adjust my fine tune setting to +20 otherwise it would severely front focus. +20 was also too much adjustment for anything less than 600mm, causing it to back focus if left at that setting. What does this mean? It means any time you want to shoot between 600mm or any other focal length, it would require a trip to the menu to adjust the AF fine tune setting. This became a VERY cumbersome process and actually caused me to miss a few good shots fumbling around with fine tune settings. The other problem, which is widespread and a known issue, is that the lens will stop autofocusing at all. The only way to get it to resume is to detach the lens and reattach it. Power cycling the camera wouldnt even get it to start working again. This seemed to happen at bad times as well. Hopefully they will be able to fix this issue with a firmware update. Tamrons customer support is good. They did offer to take the lens in under warranty and recalibrate it for me so that the fine tune problem would be more manageable. I almost decided to go this route before making the decision to try the Sigma (which I own the USB dock for, allowing me to permanently set the fine tune of the lens at various focal lengths in the lens itself). The Sigma ended up being the right lens for me.

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In the process of taking advantage of my warranty. While I still rate it 3 stars, customer service will decide if I lower the rating. I currently run this lens with my D7100. At first it took some time getting used to. I mainly purchased is for my ability to take nature shots.Which I admit it did provide some nice ones. The focal length for the price is great. The quality is ok. I personally have problems with getting consistent focus. I see some front and back focusing at different focal lengths. The sharpness doesnt seem to be there. I may have received a dud. Looking at other peoples pictures and Im left wondering how come I cant get this lens that sharp on a tripod. I recently had the pleasure of taking pictures of a nesting bald eagle. The lens performed ok, giving me usable shots, but still seems the detail isnt quite there. I took the lens to a local dealer with an Tamron representative and they gave me tips on trying to get the best picture possible ,but even they admit the lens might have to go back. Some how I have acquired lots of dust behind the front element. looking at the side of my lens it appears my lens it cupped which could be a factor in all this. I do appreciate the rubber edges by the front elements giving a little extra protection from bumps. The mount is plenty sturdy and easy to adjust remove. I do not recommend handhend as this is a pretty heavy lens you need to stabilize. The construction of the lens seems to be good. Feels solid in the hands. Overall seems like a great value once i iron out the kinks. Staying positive as this is a decent investment for a hobbyist.

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