truth_seeker wrote:
"Do you have an idea of how much 4k content is available? At what cost, and with what equipment cost?"
4k (2160p) tv's don't cost all that much more than do "regular" 1080p (HD) tv's.
For every pixel in 1080p, there are FOUR pixels in 2180p.
Have you compared 2180p to 1080p "in the store"? The difference is breathtaking. So much so, I'll reckon even bigheadfred will notice it.
The problem right now is bandwith. I don't believe any "over-the-air" providers support it yet. Probably no cable providers, either. Some "streaming" services such at Netflix offer 4k content.
Then again, one has to have a cable or fiber-optical service fast enough to stream it. Even dsl services don't have the bandwith for that. I think one would need at least a cable connection that supports 50mbps.
But again, if you've never compared 4k to regular HD tv, it's worth a look.
The latest smartphones can do 4k video (at least the iPhones can).
The iPhone displays are "retina" (pixel-doubled in each direction, like 4k).
Most upper-end still cameras do 4k now quite well.
There are 4k camcorders that offer high quality output that are affordable.
My new (2015) Apple MacBook Pro has a "retina" display that is similar to 4k. It can drive a 4k attached display.
I'm sure most upper-end Windows laptops have or offer that as well.
In the offing for tv's and computer displays is -8k-.
If you have the $$$, you can buy 8k video equipment today (look at the "Red" line of cameras).
I wouldn't be surprised if before too much longer, motion pictures will be shot at 8k (or higher). I believe some video (commercials, etc.) is shot at 4k now.