Moiré
Technique
A wavy or striped pattern that appears when a fine pattern interferes with the regular grid of the image sensor.
Typical with clothing featuring fine checks or stripe patterns. Reduce it by changing angle or distance, or in post-processing using the moiré tool in Capture One or Camera Raw. Many cameras have an anti-aliasing filter (OLPF) in front of the sensor to reduce moiré.
Tools that help with this: