For the rest:
- The focal ring is actually resistant to rotation, the advantage is that you do not go from 18 to 35 so we were looking for 24, it's funny, then I quickly used to it.
What makes this most troublesome resistance, however, is that the rotation is done by turning the ring clockwise, not clockwise like Canon lenses. So in the beginning I never know if I forced myself not enough or if I was not in a good way, what to miss "the moment" of the shoot
- Side sound at first that troubles most is the stabilization that emits an audible cavernous growl, kind of Darth Vader breathing.
If we disable one quickly realizes that it was her, and we took the opportunity to discover the sound of the auto-focus. Everything is wickedly noisy compared to the muffler kit 18-55 !! That said, let's be objective, we made it very quickly as soon as one is no longer focused on, what is more with the background sound from outside.
- The quality of the image: the colors are very hot, beware of those who are too accustomed to Canon colors.
Beware the dive, too: if the resolution is generally really excellent, are well read and reread the tests (that of [...] "lens tamron-17-50-mm-f2.8-di-II-vc" is fine) to determine which openings / Focal this goal makes its best results -> I was super disappointed with my first portraits compared to what gives my 50mm 1.8, but in rereading the test I realized that 50mm f / 2.8 is clearly not the strong point of this Tamron.
Rest distortion, too, although this 17mm, it's retouching but inevitably it is more restrictive.
- The opening of f / 2.8 constant: there ok I did really extreme tests (22h outdoor without light) and it is really stunning. Of course, the auto focus is unable to handle it, it will do a manual mep, and as we not see much in the viewfinder, you have to rely on feeling or initially, the indicator depth of field in the focus ring. It will also clear a tripod to enjoy it, but you wonder where he finds the light, that's impressive.
In conclusion:
it is excellent BUT attention to the use that you think make, confirm that it is "compatible" with the objective of capacity.
I had taken with a view to have the equivalent of my 50mm 1.8, to make great portraits, while allowing me to expand to have still some group scenes or landscape. And then disappointment. I do not know for what use it is best rather for indoor scenes or low-light landscapes and images "clean" (beautiful portraits 50mm f / 5.6 but below it's blah).
In short I think that the transition to a target of this kind requires a learning phase.
For my part, I must admit that I sold, I think for my use a 15-85 or 24-105 + external flash (certainly at least double the budget and still in hand) will match better.
Thank you to those who have read everything, I hope it will allow you to fully appreciate what Tamron when you have knowingly bought.
