keko wrote: ↑28 Feb 2025, 17:10
and how many Hz should be clearly seen all 4320 lines of moution resolution.
I can clearly see all 1080 lines on my 600hz plasma if then 600Hz is enough for 4320
Please read
Why Are TestUFO Animations 960 Pixels Per Second about why the obsolete "Lines Of Motion Resolution" is junk; it was useful for analog TV, useless for digital variable-resolution era.
Lines of Motion Resolution assumes you have a fixed resolution & Hz reference. Like back in NTSC and PAL era. Or even ATSC. But today you have odd resolutions, odd screen sizes & odd Hz, which creates inability to do apples-vs-apples.
In fact, you can have more than the physical spatial resolution, in lines of motion resolution, due to subrefresh motion blur reduction, which means these types of motion tests become useless, for the laws of physics explained in the above article. With subrefresh strobing, it is now possible to have "8000 lines of motion resolution for 1080p" for an ultra-fast-scrolling test pattern that is less than 1-second to pan from edge to edge. It makes it hard to educate people.
The old Home Theater stuff (I used to work for the Home Theater Industry) has had great inventions, and I worked for many video processor makers (Runco, Key Digital, Faroudja in 2000-2004, and most recently Retrotink 4K), but one of its old carry-forwards of the "Lines Of Motion Resolution" junk is apples-vs-bananas because there's no fixed reference and can't compare between displays easily, as displays are now different resolutions and different Hz.
Even Samsung cited my article in a research paper about obsolete motion benchmarks. I'm in
over 30 papers now, and the Coles Notes are at
www.blurbusters.com/area51 <-- Textbook reading for display manufacturers.
"Lines of Motion Resolution" = currently useless outdated analog-era stuff. To see why, see
www.blurbusters.com/why960