13 and 12 researched events on one shared scale. Pentacon / Praktica 1919–present, Pentax 1919–present.
The axis stretches where either maker has research and collapses where neither does, so a year sits opposite the same year on both. Event counts differ because research depth differs, not because one company did less.
Kamera-Werkstaetten Guthe & Thorsch grew in Dresden-Niedersedlitz and passed into the Noble family era. The works built the technical and manufacturing base from which the Praktiflex and Praktica SLR lines emerged, while remaining distinct from the Zeiss Ikon branch that later contributed the Pentacon name.
Entwicklung der Dresdner Fotoindustrie · Kombinat VEB Pentacon Dresden, 1945-1998
Kumao Kajiwara founded Asahi Optical Joint Stock Co. in Otsuka, Tokyo, in 1919. The company first made spectacle lenses and later binocular and projection optics. Its AOCO projection lens appeared in 1923. Camera-lens work began by 1931, including supply for the Pearlette camera, and the business was reorganized as Asahi Optical Co., Ltd. in 1938. The Promar camera lens appeared around 1940. Wartime disruption ended normal production, and manufacture resumed in 1946.
Announcement of PENTAX 100 YEARS OF HISTORY campaign · PENTAX HISTORY — Evidence · PENTAX HISTORY — Introduction · PENTAX HISTORY — Course of History
The Praktiflex placed a compact 35 mm reflex body and interchangeable screw-mount lens at the center of the Niedersedlitz program. Wartime disruption and postwar dispossession broke the private company, but Siegfried Boehm and the factory carried the camera concept into the state-owned period.
Postwar Asahi Optical rebuilt around binoculars and camera lenses, supplying other Japanese camera firms while developing its own camera. The company's first production camera and initial Asahiflex Takumar lenses followed in 1952. Contract optical manufacture therefore preceded Asahi's camera-system production and remains a separate attribution question.
PENTAX HISTORY — Introduction · PENTAX HISTORY — Course of History
The first Praktica appeared in 1949 with the M42 x 1 lens thread. FX generations added flash synchronization and internal diaphragm actuation, while Praktina and Praktisix projects showed that the same works could pursue proprietary professional and medium-format systems alongside the mass-market Praktica.
Vintage Manuals · Entwicklung der Dresdner Fotoindustrie · Heritage
The Asahiflex I reached the market in 1952 as Japan's first domestically produced 35mm single-lens-reflex camera. It used an M37 screw mount and Takumar lenses. The Asahiflex IIB of 1954 introduced an instant-return mirror that restored the finder image immediately after exposure. That mechanism was decisive for the later SLR experience, although absolute world-first language is disputed because earlier European cameras and patents used related return-mirror arrangements.
Mechanical Engineering Heritage No. 101: ASAHIFLEX I and IIB, MIRANDA T, ZUNOW, NIKON F · The origin of the made-in-Japan 35mm SLR camera · Systematic Survey on 35 mm High End Camera · PENTAX HISTORY — Course of History
The Asahi Pentax of May 1957 replaced the waist-level finder arrangement with a fixed eye-level pentaprism and adopted the M42 screw mount. The name Pentax was acquired from VEB Zeiss Ikon, according to the Science Museum Group corporate record. American distributor branding produced Heiland Pentax and later Honeywell Pentax cameras, but the manufacturer remained Asahi Optical in Japan. Models including the K, S2/H2, S3/H3, and SV/H3v refined the layout and automatic diaphragm coupling.
Pentax Corporation · PENTAX HISTORY — Archives · Honeywell Pentax Cameras, Lenses and Accessories · PENTAX HISTORY — Course of History
The East German state combined Kinowerke Dresden, Kamera-Werke Niedersedlitz, Altissa, Aspecta, and Welta as VEB Kamera- und Kinowerke Dresden. The new enterprise inherited overlapping cameras, projectors, factories, and skills, then began pruning and reorganizing them for coordinated production.
Pentacon: Kamera- und Optiktradition aus Sachsen · Kombinat VEB Pentacon Dresden, 1945-1998
Asahi showed a Spot-Matic prototype with through-the-lens spot metering at Photokina in 1960. The production Spotmatic of 1964 used average, stop-down TTL metering rather than the prototype's spot pattern. The Topcon RE Super reached production earlier in 1963 and is recognized by Japan's National Museum of Nature and Science as the first mass-produced TTL-metering SLR; the Spotmatic followed as an exceptionally influential implementation. The 6x7 system appeared in 1969, and Asahi introduced its Super-Multi-Coated Takumar lens line in 1971.
PENTAX Lens Technology · PENTAX HISTORY — Archives · Systematic Survey on 35 mm High End Camera · The first single-lens reflex camera to have a built-in TTL open aperture exposure meter · Fujica SLR cameras and Electron Beam Coating · PENTAX HISTORY — Course of History
VEB Kamera- und Kinowerke Dresden became VEB Pentacon Dresden in 1964. The new name joined the symbolism of five constituent factories with the established Contax-derived Pentacon camera name; Praktica, Pentina, Penti, and the new Pentacon Six remained product identities within the enterprise.
Pentacon: Kamera- und Optiktradition aus Sachsen · Entwicklung der Dresdner Fotoindustrie · Kombinat VEB Pentacon Dresden, 1945-1998
Praktica mat introduced through-the-lens metering in 1965, and the PL loading system followed in 1967. The nova, Super TL, and PL electronic branches translated these advances into cameras aimed at different levels of automation without abandoning the broad M42 lens system.
Vintage Manuals · Entwicklung der Dresdner Fotoindustrie · Heritage
Pentacon became the parent works of a combine in 1968, bringing the Goerlitz optical works and eastern Ihagee organization into a wider production network; other plants followed. Pentacon labels increasingly replaced older maker names, although design origin and factory responsibility remained product-specific.
Pentacon: Kamera- und Optiktradition aus Sachsen · Kombinat VEB Pentacon Dresden, 1945-1998
The Praktica L platform introduced a metal-blade focal-plane shutter and supported a large family of mechanical, metered, electrically coupled, interchangeable-finder, and automatic-exposure bodies. LLC, PLC, VLC, EE, LTL, MTL, and Super TL variants kept M42 central for two decades.
In 1975 the K2, KX, and KM replaced the M42 screw interface with the Pentax K bayonet and SMC Pentax lenses. The Mount Adapter K preserved use of many screw-mount lenses with limitations. The compact MX and electronically controlled ME arrived in 1976; the mechanically simple K1000 became a long-running instructional and consumer camera. The Auto 110 formed a separate miniature interchangeable-lens system. The professional LX appeared in 1980, and the ME-F of 1981 introduced autofocus through a dedicated powered lens and body contacts.
Features and Operation of the Original K-Mount · PENTAX HISTORY — Archives · Summary of the K-Mount Evolution, Names, and Features · The road to bringing K mount to birth was a long way · PENTAX HISTORY — Course of History
Praktica B cameras replaced the screw thread with an electrically coupled bayonet. B 200, B 100, BC, BCA, BCC, BCS, BM, and BMS bodies shared the new interface, while adapters accepted M42 lenses with reduced automation. Prakticar lenses became the native optical vocabulary.
Vintage Manuals · Praktica cameras and lenses · Praktica Lenses
The 1983 KA mount added electrical aperture information and program-exposure support while keeping the physical K bayonet. The Pentax 645 medium-format system followed in 1984. Autofocus bodies and KAF-family mounts then added drive, data, and power contacts in stages. The external bayonet remained familiar, but each generation changed which functions were available, making physical mounting an incomplete test of compatibility.
PENTAX HISTORY — Archives · Summary of the K-Mount Evolution, Names, and Features · PENTAX HISTORY — Course of History · SLR Digital Camera PENTAX K-1 Mark II Operating Manual
Kombinat VEB Pentacon entered the larger Carl Zeiss Jena combine in 1985. Cameras, lenses, and precision products were now planned inside an even broader state organization, just as the BX generation attempted to modernize the Praktica bayonet line before political and monetary union.
Pentacon: Kamera- und Optiktradition aus Sachsen · Kombinat VEB Pentacon Dresden, 1945-1998 · Heritage
Pentacon Dresden GmbH was formed in July 1990, but the Treuhand announced liquidation on 2 October. The decision dismantled the large state enterprise, displaced thousands of workers, and scattered assets and records. Schneider and Noble successors carried different pieces of the Dresden tradition forward.
Kombinat VEB Pentacon Dresden, 1945-1998 · 02.10.1990: Die erste grosse Insolvenz
A smaller Schneider-associated successor began work in Dresden in 1991 and later became PENTACON GmbH Foto- und Feinwerktechnik. It continued the Praktica BX 20 S into 2001 while shifting toward precision engineering and scanner products; later branded compacts did not represent the old SLR factory system.
History of Schneider-Kreuznach · VEB Pentacon Dresden - Vom DDR-Grossbetrieb zum Niedergang des Dresdner Kamerabaus
The 645N brought autofocus to the medium-format line in 1997. The same period produced FA Limited lenses and additional compact autofocus bodies. Asahi Optical expanded digital-camera work and formally changed its company name to Pentax Corporation effective 1 October 2002, converting the best-known product name into the legal corporate identity.
Asahi Optical Industries to Change Trade Name to Pentax Corporation · PENTAX HISTORY — Archives · PENTAX HISTORY — Course of History
After Dresden SLR production ended, Praktica continued on imported compact and digital cameras and later outdoor optics. Pentacon GmbH ceased operating and was removed from the register in 2024, while Praktica Limited maintains the consumer brand: continuity of name without continuity of the historic camera works.
Heritage · VEB Pentacon Dresden - Vom DDR-Grossbetrieb zum Niedergang des Dresdner Kamerabaus
The *ist D of 2003 established a Pentax digital SLR system around the K mount. Pentax and Samsung Techwin announced a digital-SLR development agreement in 2005, and Samsung's GX cameras used Pentax-compatible lenses and technology. HOYA launched a tender offer for Pentax in 2007 and consolidated the company after a contested merger process.
The Path Samsung Cameras Have Taken · PENTAX HISTORY — Archives · Pentax and Samsung Agree to Jointly Develop Digital SLR Cameras · PENTAX HISTORY — Course of History
HOYA absorbed Pentax Corporation on 31 March 2008, leaving HOYA as the surviving corporation and ending Pentax Corporation's separate legal existence. In 2011 HOYA sold the Pentax Imaging Systems Business to Ricoh. HOYA retained other operations, including medical and component businesses associated with the former Pentax organization, so the camera brand's transfer did not move every business that had used the Pentax name.
HOYA Announces Closing of Sale of the PENTAX Imaging Systems Business · HOYA Annual Report 2008
Ricoh established PENTAX RICOH IMAGING COMPANY, LTD. on 1 October 2011 to operate the acquired imaging business. On 1 August 2013 the company became Ricoh Imaging Company, Ltd., while continuing to use both Pentax and Ricoh product brands. The legal manufacturer and the consumer-facing badge were therefore no longer the same name.
Ricoh Establishes PENTAX RICOH IMAGING COMPANY, LTD. · COMPANY NAME CHANGE
Ricoh Imaging continued Pentax K-mount DSLRs, the 645 digital line, and lens production, while introducing models such as the full-frame K-1. In 2024 it launched the Pentax 17 half-frame film camera, confirming active use of the brand beyond legacy support. A Canadian government trademark record currently lists Ricoh Imaging as owner of a Pentax word mark and HOYA as an old owner for that registration; it is territory- and class-specific and should not be generalized into a global ownership statement without additional registers or corporate records.
PENTAX — 2381971 — Canadian Trademarks Database · PENTAX 17 · PENTAX HISTORY — Archives
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