4K video does not look good , even on my only 2.5k monitor.
really nasty edges.
upscaling = bad idea. 
its hard to Really to Judge 4K content on the net or on a 2.5K monitor,
the test was to see if it can be upscalded , and it can With More Work
& setup the shot alot better etc....
Like i said in my YouTube post it can be used As "B-Roll"
a second of two of footage mixed in to 4K content with a red or C500.
I guess i will do a proper Test and Use my Canon "L" lens not my cheap Sigma.
