AH-4413/AP-4414/AM-4412 4K Camera System, | ASTRODESIGN.Inc (http://www.astrodesign.co.jp/english/product/ah-4413_ap-4414_am-4412)

Interesting. Not really a field camera but I don't see why it wouldn't be used in studios. They could produce a field camera if you ask me. They already got the chip and the processing...

4K cameras are falling out of the sky, it seems. This one has to be attached to some kind of processor. The camera itself weighs about 4 lbs.