This is kind of a known issue. The 16-35 is not designed very well as far as ruggedness goes. Click the link below and scroll down a little. I'm guessing the lens may look like that. Flickr also has a page about it. I've seen reports of it costing anywhere from $175 to $400 to repair.


photography-on-the.net/.../showthread.php





http://www.flickr.com/