Relax


It's completely normal, this is how this lens sounds.


I purchased my lens in May and almost had a heart attack when I realized it made that noise. I went to the store and tested 5 different lenses, all made the same noise. I am completely neurotic so I posted on this forum, Fred Miranda, I even e-maild Canon and they all confirmed that is how this lens works.


Enjoy the beautiful images it produces :-)