My dad came by with his new tool. He just got a Canon EF 300mm f/4L IS USM AF Telepohoto lens to go with his spiffing Canon DSLR. It produces pretty cracking results
Here's a shot at 18mm showing what I saw all the way across the house where attended a party today. The red arrow is pointing to a water bottle. Don't bother clicking to enlarge this one; you can't see the bottle at all at 18mm focal length.