The Panasonic AG-CX350 4K camera is a light-weight professional fixed lens camcorder with a 1" sensor and 20x extremely wide angle optical zoom. We purchased it to use as one of our primary cameras, especially for situations requiring 4K (3840 x 2160 pixels). The camera is designed to allow high quality live-streaming without a PC or encoder unit.
Filmmaker Barry Green has done a helpful series on the CX350 and we are using them instead of making our own.
AG-CX350: Tips & Tricks Video
AG-CX350: OIS, Hybrid, i.ZOOM and D.ZOOM Video (image stabilization and zoom options)
AG-CX350: Recording Formats Video
AG-CX350: Live Streaming Video
AG-CX350: Networking Video
AG-CX350: User Buttons Video
AG-CX350: Adjusting Color Video
Panasonic's Operating Instructions for the AG-CX350 (online interactive manual)