Moire effect is a visual perception that occurs when viewing a set of lines or dots that is superimposed on another set of lines or dots, where the sets differ in relative size, angle, or spacing. The moiré effect can be seen when looking through ordinary window screens at another screen or background.
The effect is normally seen when images are displayed on a screen at a reduced size. Viewing an image at 30% of the original size can cause the photo to display a confusing pattern on the screen. Showing the images at 100% actual size on the screen you will most likely not see the moire effect.
Normally this will happen on heavy textural outfits which have a high contrast of detail of pattern to the eye. Best to avoid such items, but if you find it's your favourite jacket we can correct the final image in the retouching process. Above you can see the moire effect on the jacket.
The illustration shows two sets of lines of equal thickness and equal spacing, but one set is angled at a few degrees while the other set runs vertically. The moiré effect in this case appears as a set of thick, ill-defined, nearly horizontal bars.
Moire effected image corrected as part of the retouching process.