Circle of confusion

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

Nobody has pulled it yet.

What Wikipedia says

In optics, a circle of confusion (CoC) is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. It is also known as disk of confusion, circle of indistinctness, blur circle, or blur spot.

Excerpt from the Wikipedia article “Circle of confusion”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Original: Goliardico Vector: cmglee, CC BY-SA 4.0, via Wikimedia Commons.