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Moiré Pattern

Moire pattern. 2010s: prominent topic of digital cameras without low-pass filters

Typeface · Monoton

Nikon: Overlaying two grids creates moiré.
Nikon: Overlaying two grids creates moiré.Nikon USA, technical demonstration.View source ↗

Prompt

Apply a Moiré Pattern effect with broad interference waves and rippling color bands emerging over fine repeating textures. Overlay closely spaced grids at slightly different angles, producing alternating dark and light beats with subtle rainbow aliasing, while keeping unpatterned areas relatively clean. Keep the original subject and composition.

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Identify

Large waves or bands of color over fine, regular patterns.

Principle

Similar grids overlap or meet the sensor grid1.

Example

Fabric samples, screen photography and Op Art2 graphics.

Try it out

Slowly rotate two transparent grid lines against each other.

Background

Moiré predates digital photography. Its association with the 2010s here marks its renewed visibility as a camera issue, not the phenomenon's origin. Nikon explains the relationship between fine subject structures and the regular sensor grid, discussing it using digital cameras as an example. Two similar patterns create a new, much coarser visible structure. With digital color sensors, incorrect color bands can also appear. For experimental use, subtle rotations are particularly revealing: The underlying grid moves little, while the apparent wave moves significantly. Then photograph both grids. This adds a third scanning structure, allowing you to distinguish optical superposition of shooting errors.

Distinction

Geometric moiré and digital color aliases are related but different phenomena.

Aftermath

In controlled graphics, a distracting artifact becomes an impression of movement. Size and viewing distance strongly determine what remains visible.

Further examples · 8 images

Netback Armchair Moiré
02 Netback Armchair MoiréA blue office chair shows shimmering, colorful bands across its mesh backrest. The fine net structure interferes with the digital camera's pixel grid, creating artificial rainbow-like aliasing.GAllegre · CC BY-SA 4.0 · Wikimedia Commons
Moiré fringes IMG 3712
03 Moiré fringes IMG 3712A monkey is photographed behind a fine wire enclosure at a zoo. Dark, vertical interference waves emerge where the fence mesh conflicts with the digital sensor's sampling pattern.Brocken Inaglory · CC BY-SA 3.0 · Wikimedia Commons
2014 Prążki moiré na zdjęciu 02
04 2014 Prążki moiré na zdjęciu 02A fence or bridge railing displays wavy, undulating vertical lines across its length. This illustrates how repeating physical slats interact with the image sensor to form new, coarser visual structures.Jacek Halicki · CC BY-SA 4.0 · Wikimedia Commons
Mirror curvature inspection by Moire patterns
05 Mirror curvature inspection by Moire patternsFour monochrome panels show concentric rings used to inspect mirror surfaces. The patterns demonstrate how Moiré fringes can visually amplify and reveal small deviations in surface curvature.MordechaiLando · CC BY-SA 4.0 · Wikimedia Commons
070312-moire-a5-a16-same-curves-changing-layers
06 070312-moire-a5-a16-same-curves-changing-layersTwo overlapping layers of wavy black lines create thick, horizontal dark bands. This graphic example shows how shifting two identical transparent grids produces a significant new secondary pattern.Emin Gabrielyan · Public domain · Wikimedia Commons
Moiré Pattern at Gardham Gap - geograph.org.uk - 184387
07 Moiré Pattern at Gardham Gap - geograph.org.uk - 184387The horizontal slats of a farm building's rolling door appear distorted by large, curved interference waves. This is a classic example of Moiré occurring on architectural details in digital photography.Roger Gilbertson · CC BY-SA 2.0 · Wikimedia Commons
2008-07-14 Bus stop moiré pattern
08 2008-07-14 Bus stop moiré patternA bus shelter with perforated metal walls displays dark, curved interference fringes. These shapes appear because the overlapping holes in the background and foreground screens create a new visual grid.Ildar Sagdejev (Specious) · CC BY-SA 4.0 · Wikimedia Commons

Question

Why does the moiré effect disappear when you move the camera just a little closer?

Show possible answer +

The scale of the motif grid to the sensor grid changes; this changes the scanning interference.

Sources