Why did Freefly choose the Fujinon XK20-120mm?

Initially we intended to included a telephoto type zoom lens, however this presented multiple challenges. One, the center-of-gravity of the lens changed drastically over it’s range. Secondly, given that these types of lenses collapsed upon themselves, they were not mechanically rigid and thus prone to flexing, causing optical oddities. None of those types of lens are parfocal, which makes shooting video a huge challenge. The Fujinon XK6 Cabrio is sharp, parfocal, great zoom range, all at a weight that would allow us to hit our under 20lb system target.