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The picture shows an ASA/DIN conversion in a 1952 photography book [70] in which 21/10° DIN was converted to ASA 80 instead of ASA 100. Some classic camera's exposure guides show the old conversion as they were valid at the time of production, for example the exposure guide of the classic camera Tessina (since 1957), where 21/10° DIN is ...
conversion combination output units the system(s) to which the unit belongs units listed by name unit-code to use in template symbols shown in output other notes about the units sample of the default conversion for the unit output codes for multiple conversions
The ASA (as for American Standards Association) photographic exposure system, originally defined in ASA Z38.2.1 (since 1943) and ASA PH2.5 (since 1954), together with the DIN system (DIN 4512 since 1934), became the basis for the ISO system (since 1974), currently used worldwide (ISO 6, ISO 2240, ISO 5800, ISO 12232).
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This is an incomplete list of DIN standards.. The "STATUS" column gives the latest known status of the standard.. If a standard has been withdrawn and no replacement specification is listed, either the specification was withdrawn without replacement or a replacement specification could not be identified.
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.
This template is part of a series that resolves the country and subdivision names to ISO 3166-1 and ISO 3166-2 codes, and vice versa. ISO 3166 defines names, two and three letter codes and code numbers for all countries and six character codes (the two letter country code followed by a dash and a two or three character subdivision code) for all top level subdivisions.
The tooling is referred to as Quick Change; National Machine Tool Builders' Association, 1927; NMTB; American Standard Machine Taper, ANSI B5.18; DIN 2080 / IS 2340; ISO R 290–2583. [14] There are slight variations in threads and flanges (JIS B 6339: MAS 403); and the European standards (e.g., ISO taper, DIN 2080) use metric drawbar threads.