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| English | Russian |
| circle of confusion | пятно рассеяния (кружок рассеяния; In optics , a circle of confusion 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 . AllaR) |
| circle of least confusion | кружок наименьшего рассеяния |
| spot of confusion | пятно рассеяния |
| spot of confusion | кружок рассеяния |