Progress on international optics standards

Significant progress was made at the May 12 to 15 meeting of ISO/TC 172/SCI, Optics and Optical Instruments/Fundamental Standards held in Thun, Switzerland. Optical testing is the concern of Working Group 1 (WG1), which has been concentrating on standards for OTF (or MTF) testing of various types of lenses. In addition to recently published draft proposals on OFT-Definitions and mathematical relationships and OTF-Principles and procedures of measurement, WG1 approved draft proposals for submission to the Secretariat on OTF testing of 35mm camera lenses, office copier lenses, and telescopes.

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