Until now, 4K (also known as ultra-high-definition, or UHD) was the realm of cinema … movie theaters. But 4K televisions began to enter the retail stores in 2013. We will surely see more of this in 2014.
In parallel, we have been seeing consumer cameras that support 4K, many of them selling for less than $1000 US. This poses a technical challenge for small film makers … a data rate four times higher than HD. (May have to update your video-editing equipment.)
Here is the history of 4K cameras costing $5000 or less.
Blackmagic Production Camera (2012)
JVC GY-HMQ10 (2012)
GoPro Hero3 (2012)
GoPro Hero3+ (2013)
Sony PXW-Z100 (2013)
Sony FDR-AX1 (2013)
Sony A7s (2014)
JVC FDR-AX100 (2014)
JVC GY-LSX2 (2014)
Panasonic GH4 (2014)
Panasonic FZ1000 (2014)