http://www.adorama.com/alc/taginfo/defects <p><span style="font-size: small;">Anyone who has followed photography discussions on the web over the last 10 years or so will have noticed an increasing number of complaints about defective lenses. It's gotten to the point where I've actually seen some people complain that they are afraid tobuy a lens in case they get a bad one!</span></p> http://www.adorama.com/alc/article/8114