Siemens star

English

Etymology

Developed in the 1930s by Siemens & Halske AG to test the lenses of their narrow-film cameras.

Noun

Siemens star (plural Siemens stars)

  1. A radial, sunburst-like test target used to measure the resolution and image quality of optical instruments, cameras, scanners, and printers.
    Synonym: spoke target
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