For quality itself .:
3 year warranty by the manufacturer (registration required)
The pictures I took with the lens are quite ok but the focal length range 35 - 50 mm greatly softened by blurred.
The autofocus is also not very convincing since it often does not focus properly even in bright light usually requires one 2 Focus attempts until the subject is brought into focus. With a static motif no problem even in a portrait shot not. But when a child playing or changing situtationen when it comes to Snapshot recording absolutely atrocious.
Top is the image stabilizer. He works very reliable with very few exceptions.
Next comes the lens to the good occur almost no vignetting or Objektivabschattungen with plenty of natural light has rarely one with such a large zoom range in this price range
A plus is that a lens hood in the standard equipment included ist.Bei Canon purchased part (costs 11 euros depending on the lens even more).
best of all the service from Amazon is so quick and easy as the supply is gone and the Complaints Action of Equip. here a praise in the highest trains the team at Amazon.
I spend all in all 3 stars.
+ Lens hood in standard equipment
+ Reliable OS
+ Focal length range 18-200
+ Slight vignetting
- Blurred images in focal lengths range 35 -50 mm
- Short shelf life of the lens
- Unclean autofocus (not well suited for snapshots)
therefore gets the lens from me only 3 stars.