The Panavision 300x HD lens. It's actually a broadcast HD lens, but that makes this sucker no less ridiculous. It's over three feet in length and weighs 85 lbs. while delivering a gaping 7-2100mm continuous focal length range (F1.9-F/13) for 300X zoom. Which is a .3 degree field of vision. The cost? 300X what you're thinking.