Instruct: Classify Amazon reviews into positive or negative sentiment
Query: E18 renders camera useless

The camera itself works very well, and I would recommend if it weren't for the notorious E18 error (search Google for it) - which occurred at a particularly unfortunate time for me. Canon charges $250 to fix the problem if it's out of warranty, and denies that there is a design flaw in the camera (which there is - thousands of people are experiencing it).