And you thought yours was big... Dan Slater has gone to the complete extreme, testing telescopic lenses from a Celestron 300mm through to a Russian made 1000mm lens and the amazing Perkin Elmer 4572mm f11 Missile Tracking Lens coupled with a Nikon TC301 x2 teleconverter giving a HUGE 9144mm... You just have to see his pictures to believe what you're seeing. Yes.. that's a car jack.