Moire Colour Banding

moirendp

moirendp

Moire patterns occur when two patterns are superimposed upon each other, such as the scan lines of a tv meeting the way in which a mobile phone camera’s CMOS chip scans the scene line by line. A similar effect can be easily reproduced in photoshop. Create a small 1x3px or 1x6px RGB grid and turn it into a pattern in photoshop, overlay or multiply the pattern layer over a photograph, lower the opacity of the pattern layer to something visibly acceptable, then liquify.

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Red/Green/Blue pattern

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Photograph taken on Brighton Beach, 2014

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Multiplied with RGB layer

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Zooming in reveals tiny bands

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Liquify (Under Filter > Liquify…)

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