Nie jestem posiadaczem tego szkiełka, ale na Pbase znalazłem taką oto opinię:
I think this may be one of the best values that Canon offers. Besides this lens, I have the Canon 70-200 f/2.8 L, the Canon 100-400 L, and the Canon 17-55. This lens will hold it's own with any of them.
You may wonder why I have this lens and the "L" lenses mentioned above, but there are a lot of times I don't want to carry the big heavy glass. This makes a very nice walking around lens or a very nice combo when used with the 17-55.
The only complaint I have is that the lens rotates when focusing. This will create a problem if you're using a polarizing filter.