ISO 14807 pdf download

ISO 14807 pdf download.Photography — Transmission and reflection densitometers — Method for determining performance 1 Scope This International Standard defines a common set of reporting parameters and describes the methods to be used in the determination and presentation of individual densitometer performance and manufacturer-reported performance specifications. This International Standard applies to transmission and reflection densitometers typically manufactured for and used by the photographic, graphic arts and radiographic trades. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 5-1 :1 984, Photography— Densitymeasurements — Part1: Terms, symbols andnotations ISO 5-2:2001 , Photography— Density measurements — Part2: Geometric conditions fortransmission density ISO 5-3:1 995, Photography— Density measurements — Part3: Spectralconditions ISO 5-4:1 995, Photography— Density measurements — Part4: Geometric conditions forreflection density ISO 554:1 976, Standardatmospheres forconditioning and/ortesting — Specifications 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. NOTE There are a number of terms that are commonly used in connection with the subject of measurement, such as bias, repeatability, stability and traceability. One can avoid confusion by using such terms in a way that is consistent with other international documents. Definitions of many such terms are given in the International Vocabulary ofBasic and General Terms in Metrology [2] 1 ) NOTE 2 True values are by nature indeterminate. NOTE 3 The indefinite article “a”, rather than the definite article “the”, is used in conjunction with “true value” because there may be many values consistent with the definition of a given particular quantity. [VIM:1 993, 1 .1 9] 3.2 conventional true value (of a quantity) value attributed to a particular quantity and accepted, sometimes by convention, as having an uncertainty appropriate for a given purpose [VIM:1 993, 1 .20] NOTE 1 “Conventional true value” is sometimes called assigned value, best estimate of the value, conventional value or reference value. NOTE 2 An assigned value of a certified reference material is one type...