chromatic aberration

It shows as purple, green or magenta edging along high-contrast boundaries — which in aviation means the outline of a dark airframe against a bright sky, the worst case there is. It grows towards the frame edges and at wide apertures, and lateral fringing corrects well in software.

Nearby in Photography

• bracketing — Shooting the same frame at several exposures so at least one is right, or so they can be combined.
• burst mode — Shooting a rapid sequence of frames while the shutter button is held.
• clipping — Loss of detail where tones exceed what the sensor or file can record, leaving pure white or pure black.
• crop factor — The ratio between a sensor's diagonal and that of a 35mm frame, used to compare fields of view across formats.