I occupationally very often am traveling lately, I wanted the Sigma 18-125mm 3,8-5,6 DC HSM Lens for Canon, which I previously had for such occasions, against an even more flexible all-in-one exchange solution. Every now and then I missed a little at the long end range, and the last thing I wanted to do while I walk a photo insert in a new city for me after the dates is to be handled with lenses. I have anyway a lot at home, and I use it when I'm not traveling and was under stress. Just relax, take a walk and take good pictures. I was already clear that a superzoom is an all-rounder which, although anything can but can approach in any application at a fixed focal length. Does not it also because in some situations, the priorities are set differently. Before the Sigma 18-250 Macro OS HSM bought, I equips the photo shop of my least distrust a visit and compared it with the competition lens, the Tamron 18-270mm F / 3.5-6.3 Di II VC PZD lens ( 62mm filter thread) for Canon, locally. Have both taken in hand, bolted to my camera and shot a few dozen pictures. What struck me immediately is that the Tamron noticeably quieter, but also focused noticeably slower. I'm not a paparazzo or voyeur, so it may be I do not care how loud the AF is as long as it really is not extreme, and that is not the case at Sigma. It is much more important to me that I do not miss any images due to a lame AF or that they will not be recorded without being focused. As a further advantage of the Sigma macro function turned out. With the minimum focusing distance of 35cm to get ran much closer and achieved magnifications not possible with the Tamron (minimum focusing distance of 49cm). And if you decide to have a lens due to its flexibility, then please correct. The processing of the two lenses, I would consider to be good similarly. Since wobbles, squeaks and creaks nothing. The test images I took charge and I have at home appraised, showed that the two lenses do not take much. Time (Wide) is the one a little bit forward, sometimes the other (tele). The next day I came back past the store and bought (for the better AF and the superior macro) the Sigma. I stood before the same decision again, I would prefer the Sigma the Tamron.
