Did this today. Thank christ the filter took ALL of the damage. I had my bag in the back seat of my car and while getting everything out for an e-shoot today I had forgotten to zip up the compartment of my bag and the lens flew out as I picked up the bag. I had to wait to get home to get the filter off because the threads were crimped from the impact. The last time something like this happened I had my hood on and that saved the lens also. This thing has taken a beating.