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circle of confusion

blurry region in optics
Thing optical_phenomenon Q196727
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circle of confusion

Summary

circle of confusion is an optical phenomenon[1]. It draws 1,426 Wikipedia views per month (optical_phenomenon category, ranking #9 of 20).[2]

Key Facts

  • circle of confusion's instance of is recorded as optical phenomenon[3].
  • circle of confusion is a type of motion blur[4].
  • circle of confusion's has cause is recorded as defocus aberration[5].
  • circle of confusion's different from is recorded as Airy disk[6].

Body

Definition and Type

circle of confusion's instance of is recorded as optical phenomenon[3]. It is a type of motion blur[4].

Why It Matters

circle of confusion draws 1,426 Wikipedia views per month (optical_phenomenon category, ranking #9 of 20).[2] It has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.[7] It is known by 6 alternative names across languages and contexts.[8]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [7] ↑ . Wikidata sitelinks. wikidata.org.
  3. [8] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). circle of confusion. Retrieved May 3, 2026, from https://4ort.xyz/entity/circle-of-confusion
MLA “circle of confusion.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/circle-of-confusion.
BibTeX @misc{4ortxyz_circle-of-confusion_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{circle of confusion}}, year = {2026}, url = {https://4ort.xyz/entity/circle-of-confusion}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): circle of confusion — https://4ort.xyz/entity/circle-of-confusion (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/circle-of-confusion · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 6w ago · Nyuhn · 2026-07-10 view diff on Wikidata ↗
    Has cause → defocus aberration
    Instance of → optical phenomenon
    Subclass of → motion blur
    Aliases → —
    + 4 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/40849|batch #40849]]: ZGBK ID"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.