Scaling difference asides, it's the same original pixelwidths, so the blur difference is the same.thatoneguy wrote: ↑21 Jun 2020, 04:39This doesn't make sense to me from a physical perspective. Isn't upscaled 8K(from 1080p) still technically 8K(even if not native)?
I mean you still have 16 times the pixels.
It's the same reason why when you use www.testufo.com and use Chrome to browser zoom 200% or 50%, the motion blur remains the same amount relative to its own original objects sizes (on a relative blur size basis -- relative to image size). Because it's relative to the original pixel sizes. Same concept.
Now, if -- instead of simple scaling -- if you had a sharpness-enhancing scaler / video processor (upconverting 1080p or 4K to look close to 8K), then it'd look different; bigger delta between motion image and stationary image.