A good lens, but miracles do not happen. In extreme positions, I do not advise shooting. Sometimes it misses by 18 mm if you want to shoot a person against the backdrop of an architectural object. A bit dark, so I don’t advise them to shoot parties (flash helps out). But for the zoom, I consider the aperture ratio acceptable. Indispensable on a journey instead of a set of fixes! Or for those who have not decided yet. Still, they are equipped with 50D, and this is already a serious technique. And if DUST did not get inside (found on the third day after purchase), there would be no limit to happiness. The only good thing is that it is not reflected in the photo.