Apertus are launching a crowd funding campaign to fund the development of their 4K open source digital cinema camera: AXIOM Beta on IRC channel on freenode on Wednesday 10th of September 10AM (Central European Summer Time)

https://www.apertus.org/

Here's their pitch, together with other info and sample footage:

https://www.indiegogo.com/projects/axiom-beta-the-first-open-digital-cinema-camera

Some thoughts from PVC:

Apertus Axiom Beta by Brian Hallett (http://provideocoalition.com/bhallett/story/apertus-axiom-beta-crowdfunding-campaign)