Circle of confusion

{
  "id": "MLC-T-IND-001121",
  "term": "Circle of confusion",
  "field": "Industrial and trades",
  "definition": "The small, circular blur formed by a point of light that is not perfectly in focus on an image sensor or film. When a point source of light is out of focus, its image spreads into a small disk. The size of this circle determines the perceived sharpness of an image, with smaller circles resulting in greater apparent sharpness.",
  "synonyms": [
    "blur circle",
    "blur spot",
    "circle of indistinctness",
    "disc of confusion",
    "disk of confusion"
  ],
  "subject": "Optics and imaging",
  "translations": {
    "de": "Zerstreuungskreis",
    "es": "círculo de confusión",
    "fr": "cercle de confusion"
  },
  "url": "https://mlchart.com/terminology/industrial/circle-of-confusion/"
}