What does moiré mean in English?

1a : an irregular wavy finish on a fabric. b : a ripple pattern on a stamp. 2 : a fabric having a wavy watered appearance. 3 : an independent usually shimmering pattern seen when two geometrically regular patterns (such as two sets of parallel lines or two halftone screens) are superimposed especially at an acute angle.

Read more

Keeping this in consideration, what does moiré mean in lightroom?

What is the moiré effect in radiography?

Then, what is ca in photography?

In optics, chromatic aberration (CA), also called chromatic distortion and spherochromatism, is a failure of a lens to focus all colors to the same point. It is caused by dispersion: the refractive index of the lens elements varies with the wavelength of light. Then, why do photos of screens show strange lines and colors in the image? The strange pattern you see in digital images of screens is what happens when two grids interact. When you take a picture of a screen, the camera's grid won't be able to accurately represent the screen's grid unless they're aligned exactly.

What does reduce moiré mean?