A bit more on KM and Sony.
Most are under the impression that Sony suddenly "bought" KM. Those two had in fact shared technology and manufacturing for some time before that. The Sony T and H series originated from a KM design (Dimage Z and X) and shared sensors and lenses between the two makers. KM is still alive inside several new cameras, the ones using "folded optics" and the ones using sensor anti-shake, both KM patents. Sony have been using Zeiss lenses for many years before the KM take over and it's entry into the SLR market. Another not so obvious connection is Tamron (partly owned by Sony) a company that supplied lenses to both KM and Sony