Two weeks ago I purchased a Canon 35mm/f2.0. From the outset I kept getting err99 every time I put it on the lens, and it got progressly worse. I just got a 2nd one and after about 25 shots, I started getting err99 again, but less frequently.. It just started happening again.

What does this mean? I've done my homework, and I haven't found one complaint about this. So, it can't be a lens incompatabiliy or design problem.

When I purchased the 2nd lens yesterday, the salesman told me if this happens with this lens, rather than send it back, ship both the camera and lens to Canon. I hesitate to do that when I can return the lens and get my money back. Not to mantion the fact that I don't want my camera gone for a few weeks. BTW, I've never had err9 before on the XT - and I've used the XT with 4 other lenses numerous times.

Please - I would like some advice/suggestions - as to what to do.

Thank you.

Liz