Aliasing USA - Photography Terms & Glossary

Glossary Of Photography Terms [1]

Aliasing Aliasing in photography refers to a phenomenon where high-frequency patterns or details in an image appear distorted or misrepresented due to limitations in the sampling rate of the camera sensor or image processing algorithms. When the resolution of the sensor is insufficient to accurately capture fine details, aliasing artifacts such as moiré patterns, jagged edges, or false colors may occur, resulting in a loss of image clarity and fidelity.
Aliasing is particularly noticeable in images containing intricate patterns, textiles, or repetitive structures, where the sensor's sampling grid interacts with the subject matter, causing unwanted visual distortions. To mitigate aliasing effects, photographers may employ techniques such as using optical low-pass filters, increasing sensor resolution, or applying post-processing algorithms designed to reduce aliasing artifacts and preserve image quality.