I wish Atmos or some other 3rd party will make a smaller 4K external recorder without a display soon. Anyone know if the A7S & GH4 will be able to display RAW 4K on the camera displays coming from a external 4K recorder?
If you envision 4K UHD Blu ray to be like LaserDisc then UHD 4K TV sets will be as well & i don't see that happening. All the UHDTV manufacturers what to sell UHDTV's. Very limited Netflix 4K, Sony Hockey Puck 4K, etc. is not going to sell UHDTV's. Right now to really sell UHDTV's that makes since to consumers is to persons who buy 4K camcorders which is not much.
If the Blu ray Disc Association is smart they could implement a new UHD Blu ray standard in phase's as well UHD BD 1, UHD BD 2, etc. I don't think any current & near future UHD TV's for home can even support Rec.2020 4:4:4 16 Bit
$2000.00 accessory for the GH4 http://shop.panasonic.com/shop/model/DMW-YAGH?sc_mc=sem_google_cov_camera-brand_model_03192014_imaging
FYI save $400.00 when buying together with the GH4 (DMC-GH4-YAGH) with a later ship date than buying the GH4 body only http://www.bhphotovideo.com/bnh/controller/home?O=&sku=1028548&gclid=CI--6b-A270CFYhaMgod3mUAxg&is=REG&A=details&Q= & http://www.adorama.com/IPCDMCGH4A.html