This is a complete pain in the back side.
All of a sudden yesterday I started getting "Err 01" on my 350D while using my Canon 17-85 IS lens.
From what I've read that means there is a comunication error between it and the body. My 50mm prime and 70-300 IS both work fine so it must be the 17-85 that is the problem.
What is the best way of raising this with Canon? I went through their support system yesterday, but haven't heard back yet.
The most annoying this is thats my general purpose lens, only got the other two I can use at the moment (I gave the 18-55 kit lens to my uncle).