JB/T 7799-2014Resolution test strips for lenses of colour photo printers (English PDF)

JB/T 7799-2014 is the English-translated version of 彩色扩印机镜头分辨率测试片.

JB/T 7799-2014 is the recommended Chinese machinery industry standard for the resolution test strips used with the lenses of colour photo printers and enlargers.

It gives the technical requirements and the test methods for the standard strip on which the overall resolution of a colour enlarging lens is measured, the test piece being made on black and white film.

The standard also deals with the marking, packaging, transport and storage of these strips. GB/T 321 is the document cited in it. It replaces JB/T 7799-1995. Issued on 6 May 2014, it has applied since 1 October 2014.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

JB/T 7798-2014|GB/T 34970-2017

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