noun
- Plural of halation; optical effects in photography caused by light reflecting off the back of a film or plate, creating a halo or blur around bright objects.
Usage: technical; photography
Examples
- The photographer noticed halations around the bright streetlights in the night shot.
- Modern film stocks are designed to minimize halations through anti-halation backing.
- Halations can reduce image sharpness and contrast in high-contrast scenes.
- The old camera's halations were particularly visible when shooting toward the sun.