DX encoding: Difference between revisions

Revision as of 23:16, 21 January 2018

Revision as of 14:46, 22 January 2018

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== History ==

In order to simplify the handling of 35&nbsp;mm film in 135 format Kodak introduced the DX encoding method on 3. January 1983.<ref name="Kodak_1983_Press1"/><ref name="Kodak_1983_Press2"/> In contrast to former isolated solutions like [[FujifilmFuji (company)|Fuji]]'s film speed encoding method in 1977,<ref name="Fuji_Patent_4024557"/> which was already using electrical contacts for film speed detection on 135 format cartridges,<ref name="AP_1977_Fuji"/> Kodak's later DX code system immediately met success in the marketplace.

The first DX encoded film was the color negative film Kodacolor VR-1000 in March 1983.

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''DX-iX'' (data exchange - information exchange) is an expanded DX encoding system introduced in 1996 to be used in conjunction with the [[Advanced Photo System]]. It is only used on [[APS film]]s format [[IX240]] aka [[Advantix]].

{{anchor|Barcode-System}}In 1998, [[Fujifilm]] introduced a film identification system for [[120 film|120]] and [[220 film|220 format]] [[roll film]] called ''Barcode-System'' (with logo "|||B"). The [[barcode]] encoding the film format and length as well as the film speed and type is located on the sticker between the actualemulsion carrying film and the backing paper.<ref name="Paul_2008_Fuji-Barcode"/> This barcode is optically read by newer [[medium format]] cameras like the Fujifilm GA645i Professional, GA645Wi Professional, GA645Zi Professional, GX645AF Professional, [[Fujifilm GX680III Professional|GX680III Professional]], [[Fujifilm GX680IIIS Professional|GX680IIIS Professional]], [[Hasselblad H1]], [[Hasselblad H2|H2]], [[Hasselblad H2F|H2F]] and [[Hasselblad H3D|H3D]] Model&nbsp;I with HM&nbsp;16-32 as well as by the [[Contax 645&nbsp;AF]].<ref name="Paul_2008_Fuji-Barcode"/>

==DX cartridge barcode==

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<ref name="Minolta_7000AF">{{cite web |publisher=[[Konica Minolta]] |___location=Japan |url=http://ca.konicaminolta.jp/oldnew/minolta/1980/1985.html |archive-url=https://web.archive.org/web/20080323040256/http://ca.konicaminolta.jp/oldnew/minolta/1980/1985.html |title=Introduction of the Minolta 7000 AF in February 1985 |work=Minolta camera history |archive-date=2008-03-23}}</ref>

<ref name="Fuji_Patent_4024557">{{cite web |publisher=[[Fuji (company)|Fuji]] |url=http://www.google.com/patents?id=YQg9AAAAEBAJ&printsec=frontcover&dq=4,024,557 |id=Patent 4024557 |title=US-Patent 4024557: Film magazine having film speed indicating means |access-date=2011-07-21}}</ref>

<ref name="AP_1977_Fuji">{{cite journal |journal=[[Amateur Photographer]] |title=Fuji's Latest Auto-System |date=1977-02-16 |page=61 |url=http://www.zenitcamera.com/qa/images/fuji-cassette-ap-1977-02.jpg |access-date=2011-07-21 |dead-url=no |archive-url=https://web.archive.org/web/20180122141109/http://www.zenitcamera.com/qa/images/fuji-cassette-ap-1977-02.jpg |archive-date=2018-01-22}} [http://www.zenitcamera.com/qa/images/fuji-cassette-ap-1977-02.tif<!-- https://web.archive.org/web/20180122141126/http://www.zenitcamera.com/qa/images/fuji-cassette-ap-1977-02.tif -->]</ref>

<ref name="Paul_2005_DX-CAS">{{cite web |title=Ausführliche Informationen zum DX/CAS-Code |language=German |trans-title=Comprehensive information regarding DX/CAS code |author-first=Matthias |author-last=Paul |date=2005-10-22 |url=http://www.mi-fo.de/forum/index.php?showtopic=10279&view=findpost&p=120737 |access-date=2011-07-21}}</ref>

<ref name="Paul_2008_Fuji-Barcode">{{cite web |title=Informationen zu Barcodes auf Rollfilmen |language=German |trans-title=Information on barcodes on rollfilms |author-first=Matthias |author-last=Paul |date=2008-08-24 |url=http://www.mi-fo.de/forum/index.php?showtopic=21332 |access-date=2011-07-21 |archive-url=https://web.archive.org/web/20160804010215/http://www.mi-fo.de/forum/index.php?showtopic=21332 |archive-date=2016-08-04}}</ref>

<ref name="Kodak_4965628">Kodak US patent 4965628</ref>

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