How Do You Test a New Lens?

[neuroanatomist]

A new item like that I usually tell the store "You call Canon and give me a different copy"

+1

I can understand them waiting to receive the returned item before shipping the replacement, but they should replace it as a clicking sound certainly isn't normal.

I'd be interested to hear what Canon tells you. Either way, Adorama should replace. Email Helen if the issue remains unresolved.