This lens is not be beat in my opinion sharpness. It produces a very smooth, beautiful bokeh, making the captured objects appear almost three-dimensional. The price is really high, but you get a picture quality that is second to none. The Focus is fast and sits at the right place. It's my fourth Sigma, so far I have not been disappointed, although many contemporary has repeatedly found a fly in the ointment. The user must be clear that he just moves at close range on thin ice because the maximum aperture means a minimum depth of field here. The physics but is owed and applies to all lenses. If, as here already happened, this lens compares with another, then you should not use a 24-105mm zoom lens, because in this case, Apples and oranges comparing or trying to bend the physics. One can compare it with other 50mm fixed focal length High intensity, since you will find no better. I use this part of the way on an EOS 6D, an ingenious combination, in my opinion, and Chromatic Aberration I find virtually no. Incidentally, such fringing with Lightroom must be eliminated in a split second, they should do occur.
