This is not true. The only lens like this is the very cheap zoom that was introduced along with the 300D. All their other lenses are fully EF compatible.
BR From: Jostein <[EMAIL PROTECTED]> Canon's solution to this, is to make dedicated wide-angles for the models with less than full-size chips. With rear elements that protrude further into the camera house than ordinary lenses. Because the mirror is smaller, there's room. They have even ensured that those lenses are physically incompatible with any full-size chip/film cameras.
