post processing - Is it possible to eliminate Moiré patterns from . . . Absolutely, it is possible to capture a LED screen in-camera without moiré The Mandalorian show is filmed in a 270° cylindrical projection room, called "the volume" by the production team Rather than using CGI in post, the scene's background elements are projected in real time on the LED screen, and captured at the same time as the actors in camera There is no moiré in that show
Why do photos of digital screens turn out the way they do? 3 As other answers state, the effect is called Moire But why does it happen when you downscale or zoom-out? As prevoiusly stated Moire happens when two patterns interact, specially if the two patterns have a "frequency" (read size of the repeating characteristic) close enough to each other
image processing - Photography Stack Exchange Moire patterns caused by sampling a continuous image are aliases The same math applies to them just as it applies to high frequencies aliasing into a audio stream and sounding like background whistles It's the same stuff, with the same theory to explain it, and the same solution to deal with it
does the presence of Moiré in a photo implies the lens outresolve the . . . As to your question about producing moire patterns when the sensor has higher resolution (resolvable line pairs) than the lens: I'm skeptical that that's possible, since an optically blurred image can't be sharpened by using more pixels You'll just get a better final image print of the blur itself
post processing - What are the strange curved lines appearing on fabric . . . If you search for something like remove moire in photoshop you'll find plenty of articles with advice for removing Here's one from photographylife com An alternative is to use a photo editing program like Lightroom that has a tool for removing moiré built-in