First of all, the weight: The new Sigma weighs felt as much as the old lens and body together. Quality weighs just ...
Workmanship we could not find even the photo marathon on "the day" and in difficult images in the snow it has not let us down. The AF motor hums quietly and focused afloat. The quality of the images is at a high level, which of course is also related to the photographer ...
Supplied with a lens hood was included, which is not always granted.
As a bonus there after registering 3 years warranty.
To be also equipped for all everyday situations and a little is this lens a strong buy recommendation. If you want more, you have to spend even more.