re: #4 CuriousLurker

I did with these but it can be hand held. You need lots of light and strong hands. Rule of thumb-the focal length is your maximum exposure time. 1/600th of a second in my case. 400 mm x 1.6=640 since I have the smaller sensor. Not full frame. But here is the beast itself on the 7D

The lens not the camera mounts on the tripod.