The native mount on the GY-LS300 is Micro Four Thirds. This is an active mount, enabling electronic communication from camera to lens, enabling many functions such as: auto-iris, image stabilisation, power zoom, auto focus. Using the JVC Variable Scan Mapping technology, the image from the Micro Four Thirds lenses fills the screen with no vingetting from the Super 35mm sensor. The results are spectacular.
The above movie can be watch in 4K at www.youtube.com/watch