12 and 12 researched events on one shared scale. Mamiya 1940–present, Polaroid 1932–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.
Land and George Wheelwright built a Boston-area research company around synthetic polarizing sheet, moving from experimental rooms into purpose-built production. In 1937 new investment supported reincorporation as Polaroid Corporation and transferred the laboratory patents into the new firm.
The Invention of the Polarizer · Commercialization of the Polarizer
Seiichi Mamiya and Tsunejiro Sugawara established Mamiya Koki Seisakusho in Tokyo in 1940 and began producing the Mamiya Six. The folding 120-film rangefinder used Mamiya's back-focusing mechanism, moving the film plane for focus while the lens remained fixed. The Japanese Camera Museum reports that the camera remained in production during wartime restrictions.
Mamiya Camera Exhibition: The History of Invention and Ingenuity · Corporate history · About Mamiya
Military and industrial optical work expanded Polaroid beyond sunglasses and camera filters. The company learned to manufacture coated materials and precision optical assemblies at scale, creating the interdisciplinary base of chemistry, mechanics and design that later supported instant photographic systems.
Mamiya rebuilt postwar production and in March 1946 established a Setagaya factory to make shutters and lenses in-house. Early postwar Mamiya Six cameras nevertheless appear with several lens and shutter combinations because supplies were unstable. The factory became Setagaya Koki Co., Ltd. in July 1950, and Mamiya Koki Seisakusho was reorganized as Mamiya Koki Co., Ltd. that December.
Mamiya Camera Exhibition: The History of Invention and Ingenuity · Corporate history · Mamiya 6 Model V (1953)
Land demonstrated instant photography in 1947, and the Model 95 reached customers in 1948. Its negative-positive roll-film process used camera rollers to spread reagent before the photographer peeled apart a finished print, relocating much of the darkroom process into a portable system.
Polaroid Timeline · Polaroid · The Idea of Instant Photography
The Model 95 opened a broad family of folding roll-film cameras, followed by higher-specification 110, 120, 150, 160, 700, 800 and 900 models and the smaller 80 series. Rangefinders, automatic exposure and supplier-made lenses differentiated equipment for casual and advanced photographers.
Polaroid · The First Thirty Years, 1948-1978: A Chronology of Polaroid Photographic Products
The company expanded into twin-lens reflex, 16mm subminiature, and 35mm cameras while continuing the Mamiya Six line. Its 1957 Mamiyaflex C Professional made the entire paired-lens and shutter board interchangeable and used bellows focusing for close work. The Mamiya Magazine 35, also dated 1957 by the Japanese Camera Museum, carried a Sekor 50mm f/2.8 and used an interchangeable film chamber.
Mamiya Sekor Guide · Mamiya Camera Exhibition: The History of Invention and Ingenuity · Mamiya TLR System Summary
Mamiya introduced the Press camera in 1960 and developed a broad system of roll-film backs, sheet and instant-film accessories, and lenses. The C-series TLR evolved through C2, C3, C22, C33, C220, and C330 branches. Mamiya also sold 35mm SLRs using the Praktica/Pentax M42 screw mount and later proprietary mounts. A new Urawa factory opened in 1963; Setagaya Koki was absorbed that June, and its Tokyo factory operation was integrated into Urawa in 1964.
Mamiya Sekor Guide · Mamiya Camera Exhibition: The History of Invention and Ingenuity · Mamiya TLR System Summary · Corporate history
The Automatic 100 introduced pack loading and electronic exposure, then 100, 200, 300 and 400 series cameras varied body material, finder, timer, flash and lens. Manual 180, 190 and 195 models used Japanese shutters and named optics, giving the platform a professional branch.
The First Thirty Years, 1948-1978: A Chronology of Polaroid Photographic Products · Models - Polaroid Land Camera
The low-cost Swinger and its successors carried instant photography into youth culture and casual social use. Colorpack and other rigid-body pack-film cameras broadened the same idea, while portrait, identification, medical and industrial systems made immediate prints useful far beyond family snapshots.
Polaroid Timeline · The First Thirty Years, 1948-1978: A Chronology of Polaroid Photographic Products
Mamiya established a production subsidiary at Saku in 1970 and released the RB67 Professional that year. Its rotating film magazine changed between horizontal and vertical 6×7 framing without turning the camera, while body bellows handled focusing and lenses supplied leaf shutters. In 1975 the M645 opened a smaller 6×4.5 SLR system using a focal-plane shutter; the M645 1000S followed in 1976 with a 1/1000-second top speed.
Mamiya Camera Exhibition: The History of Invention and Ingenuity · Mamiya RB67 Pro-S instruction manual · Corporate history
The folding SX-70 combined reflex viewing, a collapsible mirror path, motorized ejection and integral film that developed in daylight. Alpha revisions improved the mechanism, Sonar added ultrasonic autofocus, and rigid-body OneStep and Pronto cameras translated the format into mass-market products.
Polaroid SX-70 series cameras · Research and Development, Project Code SX-70 · Introducing One-Step Photography
Mamiya continued professional medium-format development while changing its 35mm strategy through NC, ZE, and Z-series proprietary mounts. The RZ67 Professional arrived in 1982 as an electronically integrated development of the RB concept. Contemporary patent records assigned to Mamiya document active optical calculation, including zoom-lens work, rather than a catalog built entirely from external designs.
Mamiya Sekor Guide · Mamiya Camera Exhibition: The History of Invention and Ingenuity · Mamiya RZ67 Pro II instruction manual · JPS58100115A — Zoom lens
Higher-speed 600 film supported flash-equipped box cameras and folding SLR 680/690 models. Spectra, called Image in several markets, used a wider integral format, while Captiva, i-Zone and JoyCam pursued different print shapes and uses. Similar styling did not make these film packs interchangeable.
Where can I find a user manual for my Polaroid camera? · Polaroid Corp Form 10-K for fiscal 2000
Osawa & Co., Mamiya's important international distributor and shareholder, sought court-supervised rehabilitation in February 1984; Mamiya Koki filed on 5 March. Government records treated both as major failures with effects on suppliers and employment. Mamiya's 35mm camera line ended during the reorganization, while its professional medium-format systems continued.
Cabinet response concerning the failures of Osawa & Co. and Mamiya Koki · Mamiya Z-Series 35mm Cameras
Polaroid prevailed in its instant-photography patent case against Kodak, leading Kodak to leave the field in 1986. Yet dependence on chemical instant imaging became a liability as digital photography grew. The original Polaroid Corporation entered Chapter 11 in 2001 after a difficult diversification.
Kodak loses high court appeal in Polaroid case · Polaroid Corp Form 10-K for fiscal 2000
The New Mamiya 6 appeared in 1989 as an electronically controlled 6×6 interchangeable-lens rangefinder with a collapsible lens mount. The RB67 Pro SD followed in 1990. In 1992 Olympic Co., Ltd. absorbed Mamiya Koki; the combined company became Mamiya-OP in 1993. Camera and lens manufacturing subsidiaries Mamiya and Shibata Mamiya were combined at Saku in 1994.
Mamiya Camera Exhibition: The History of Invention and Ingenuity · Corporate history
Mamiya extended the rangefinder concept to the 6×7 Mamiya 7 in 1995 and developed the 645AF platform for film and digital backs. The Mamiya ZD, shown in 2004 and released in 2005, used a large 36×48mm CCD and Mamiya 645AF lenses. Patent records from the period continue to show optical-design work assigned to Mamiya-OP.
Mamiya Camera Exhibition: The History of Invention and Ingenuity · JP2004102100A — Retrofocus type super wide-angle lens
Assets and the Polaroid name passed through a reorganized company and later Petters Group ownership. Instant camera production and the remaining film lines stopped in 2008, and the post-reorganization company entered bankruptcy that December amid the wider collapse of the Petters organization.
Mamiya-OP transferred its optical-equipment business, including staff, facilities, inventory, trademarks, and patents, to the newly formed Cosmo Digital Imaging business in September 2006. The camera operation soon used the Mamiya Digital Imaging name. Mamiya-OP's own corporate chronology states that it withdrew from optical business, so the continuing camera brand and the continuing Mamiya-OP corporation must not be treated as the same enterprise after this transfer.
The Impossible Project organized around Polaroid's surviving Enschede plant and rebuilt integral-film production with altered materials and supply chains. Film sales resumed in 2010, preserving the physical Polaroid format even though the original Cambridge corporation and its formulas did not continue intact.
About us · Polaroid and Polaroid Originals to further integrate business units
Phase One made a major investment in Mamiya Digital Imaging in 2009 and took strategic leadership in research, development, marketing, and distribution. Mamiya, Phase One, and Schneider Kreuznach then announced shared design, development, manufacturing, and delivery of leaf-shutter lenses for the 645DF platform. In 2012 Mamiya Digital Imaging and Leaf Imaging consolidated product development, marketing, and support under the Mamiya Leaf brand while retaining Mamiya labels on cameras and lenses.
Schneider Kreuznach, Phase One, Mamiya Digital Imaging Cooperate to Drive Innovations in Medium Format Digital Lenses · Phase One Invests in Mamiya Digital Imaging · Mamiya and Leaf brands and lineups consolidate
Phase One acquired Mamiya Digital Imaging's assets in December 2015 and established Phase One Japan, taking control of medium-format camera, central-shutter, and lens design and development. The Phase One XF had already launched that June as a new Phase One-designed platform. Current Phase One material lists Saku as a regional office and maintains support or compatibility information for selected Mamiya equipment, but the current product system is Phase One-branded and centers on Schneider Kreuznach lenses. Axcel has held a majority investment in Phase One since 2019.
Which products can I get help with from Phase One and Mamiya-Leaf Technical Support · Leaf Shutter Lenses · Phase One · About Phase One · Phase One Japan established and succeeds Mamiya optical business · Phase One Unveils the Future of High-End Photography
In 2017 the majority shareholders behind the Impossible Project acquired PLR IP Holdings, owner of the Polaroid brand. Polaroid Originals followed, and the businesses were integrated under Polaroid B.V.; the current company again develops instant cameras and manufactures film at Enschede.
About us · Polaroid and Polaroid Originals to further integrate business units
