Removing all noise reduction and sharpness
No matter what I do I can't get rid of the image processing in this display, in the menu I have Sharpness=0 and Noise Reduction=off, in the service menu I have TI Mode=off,SWAP Mode=off, Uart Mode=off, Video Quality->Sharpness=0, Video Quality->DCC=off.
Basically when I look at a blurry jpeg or video, even when running the desktop itself at 4K, it gets sharpened/noise reduced in a cartoonish way, almost like the smart upscaling on a SNES emulator. I don't like the look, and this also kills my confidence in using apps like photoshop, because there is no way to know if the pixels I'm editing are just artifacts of the TV. If you move the mouse nearby, the scaling seems to go away in an area a few pixels around the cursor, I'm guessing this is because the TV's scaling algorithm sees the high-resolution cursor, and turns off the scaling.
However, I have found if you go into the Engineering Menu (menu+2947) and select "Video->Magic Picture=Dynamic", you will see a sweeping area of the screen where the crappy scaling effects are toggled on and off. If you switch between Magic Picture=Dynamic,Move,Off several times, you can eventually glitch it out into a state where switching from Dynamic to Move will freeze and lock in the effect, weirdly it will actually be inverted at the time you freeze it, so anywhere the image processing was turned on it will now be off, and vice versa. When you freeze it there will unavoidably be a line down the middle of your screen.
I tried to get some pictures with a camera, but the effect was very hard to capture.
Put your TV in native 4k, turn off all sharpness and noise reduction, then open this picture in chrome, and hit ctrl + "+" several times until you are zoomed 500%:
(link removed, not enough posting history to link to an image. Go to google image search, search breed black retriever puppies, and open the original image of the first result. you see the effect with any jpeg, but it is most apparent in areas of high contrast)
Then on your remote hit Menu, type in 2947, go to Video, and set Magic Picture = Dynamic, then hit menu again to show the full screen. You will see a sweeping area and should see the edges of the puppy go in and out of the weird default vibrance/noise reduction/sharpening and into what you would see on a normal monitor!
Anyway, I need help finding settings it make permanent without the hack mentioned above, which, depending on where you stop magic picture, will leave a blue line on the screen until you turn it back off! Anyone? Or anyone just not seeing the effect at all when they try it?