Petri Camera

Petri Camera was a Japanese optical company and photographic-equipment brand whose history began in 1907. Before adopting the Petri name, the business operated as Kuribayashi Shashin Kōgyō, also rendered in English as Kuribayashi Camera Industry. The name reflected the company’s early identity and was associated with the Japanese term for a chestnut grove. Over several decades, Kuribayashi developed a broad range of photographic equipment, including bellows cameras, rangefinders, single-lens reflex cameras, lenses, and compact models. The company’s most recognizable products emerged during the postwar expansion of Japanese camera manufacturing. Its first SLR, the Penta, appeared in 1959. Models for the domestic Japanese market were generally sold under the Penta name, while export versions used the PetriFlex designation. The early Penta used a universal M42 screw mount, but many later Penta, Flex, and FT cameras adopted a proprietary Petri breech-lock bayonet. This system allowed the company to differentiate its bodies and lenses, although the limited lens range reduced flexibility compared with the more extensive ecosystems offered by larger competitors. Petri later returned to the M42 mount on models such as the FTX and continued using screw mounts on several lower-cost cameras. In 1962, the company changed its corporate name to Petri Camera Ltd. The following year it introduced the Petri 7S, a coupled-rangefinder camera with a leaf shutter and the distinctive Circle-Eye System. Its construction, manual controls, and color-corrected lens gave it a reputation for durability and optical quality. The model found users among some professional photographers in the 1960s and has retained a following among collectors and street photographers. The Petri 7S 11, introduced in 1966, became another commercially successful model. Petri’s product design also included unusual accessories and integrated solutions. Certain Petri 7 models could be fitted with screw-on auxiliary telephoto and wide-angle lenses, with a separate optical finder used to frame the altered field of view. These systems were relatively economical because the primary lens retained the principal diaphragm and optical components. Some Petri cameras used ring photocell metering that did not require a battery, while focusing remained manual through a rangefinder or split-image-style viewing arrangement. The company faced mounting pressure from the structural changes in the camera industry. Increasing electronic integration, larger-scale manufacturing, intensified competition from Japanese camera companies, and the shift toward cameras with electrical contacts weakened Petri’s position. Kuribayashi ultimately filed for final bankruptcy in 1977. A labor union affiliated with Sohyo continued operations using employee capital under the name Petri Kōgyō K.K. The last reported camera model was the MF10, but its screw-mount design was increasingly uncompetitive as electronic and autofocus systems became standard during the 1980s. The Petri brand was subsequently sold to the British Dixons Group and briefly used as an in-house brand in the early 1980s. Petri Kōgyō later left the camera business and became associated with telescope manufacturing at a plant in Sugito, Saitama Prefecture. Although no longer a mainstream camera manufacturer, Petri remains visible in the used-camera and collector markets because of its mechanically distinctive bodies, uncommon lens mounts, affordable vintage equipment, and the enduring reputation of models such as the Petri 7S.

Petri Camera traces its origins to 1907, when the Japanese optical business that later became associated with the Petri name was established. Before World War II, it was known as Kuribayashi Shashin Kōgyō, or Kuribayashi Camera Industry. The company’s name is connected with a Japanese expression meaning chestnut grove, and the business developed as a domestic optical and photographic-equipment manufacturer. Its early output included bellows cameras and rangefinder designs. After the Second World War, Japanese camera makers increasingly competed in both domestic and international markets, and Kuribayashi developed products for both audiences. The company’s first SLR was the Penta, introduced in 1959. Penta was used principally for domestic Japanese models, while PetriFlex was used for export versions. The original Penta used the widely encountered M42 screw mount. Later cameras in the Penta, Flex, and FT families often used a proprietary Petri breech-lock bayonet, creating a distinct but relatively narrow lens ecosystem. Petri eventually returned to the M42 standard on the FTX in 1974 and used screw mounts on later inexpensive bodies including the FT1000, FT500, MFT1000, and Micro MF-1. A major stage in the company’s development came in 1962, when it adopted the name Petri Camera Ltd. In 1963, it produced the Petri 7S, a coupled-rangefinder model with a leaf shutter and the company’s Circle-Eye System. The camera became known for its mechanical construction and color-corrected lens. It was used by some professional photographers during the 1960s and has continued to attract vintage-camera users because of its manual operation and durability. The Petri 7S 11, introduced in 1966, was another successful model and helped establish the brand’s reputation among enthusiasts. Petri also experimented with accessory systems. Selected Petri 7 cameras could accept screw-on auxiliary telephoto and wide-angle lenses. A dedicated finder provided framing references for the altered focal lengths, while the primary lens retained the main diaphragm and optical system. The approach reduced the cost and complexity of the accessories but required careful manual operation. Some cameras used ring photocell meters that operated without a battery, reinforcing the brand’s emphasis on mechanical and relatively self-contained designs. The company’s difficulties reflected wider changes in the photographic industry rather than a single product failure. Camera manufacturers were moving toward electronic controls, electrically coupled lenses, and eventually autofocus. At the same time, larger producers benefited from scale and broader lens and accessory lines. Petri’s proprietary mount, modest lens selection, and continued reliance on screw-mounted or mechanically controlled designs made it difficult to match competitors’ newer systems. Kuribayashi filed for final bankruptcy in 1977. Rather than ending immediately, the workforce and its union continued the operation under the name Petri Kōgyō K.K., financed with employee capital. The MF10 is identified as the last camera model produced by the continuing operation. Its screw-mount lens system was poorly positioned against cameras offering electrical contacts, and the brand disappeared from the mainstream camera market during the autofocus transition of the 1980s. The Petri trademark was later sold to the UK’s Dixons Group, which used it briefly as an in-house brand in the early 1980s. Petri Kōgyō subsequently left camera manufacturing and produced telescopes at a facility in Sugito, Saitama Prefecture. Today, Petri cameras are primarily encountered through vintage-camera collecting and used photographic-equipment markets. The 7S, 7S 11, Penta, PetriFlex, FT-series, and other mechanically distinctive models remain relevant to collectors because of their unusual industrial design, manual controls, and lower prices compared with better-known Japanese marques.

• 1980

  Petri brand passes to Dixons Group

  [1]Petri Cameraen.wikipedia.org

  The brand is sold to the UK Dixons Group and briefly used as an in-house label.

• 1977

  Final bankruptcy and employee continuation

  [1]Petri Cameraen.wikipedia.org

  Kuribayashi enters final bankruptcy, after which the workforce continues operations as Petri Kōgyō K.K. using employee capital.

• 1974

  Return to M42 screw mounting

  [1]Petri Cameraen.wikipedia.org

  The Petri FTX returns to the M42 mount, a design subsequently used on several lower-cost bodies.

• 1966

  Petri 7S 11 becomes a successful model

  [1]Petri Cameraen.wikipedia.org

  Petri expands its rangefinder offering with the commercially successful 7S 11.

• 1963

  Petri 7S is introduced

  [1]Petri Cameraen.wikipedia.org

  The Petri 7S Circle-Eye coupled rangefinder launches with a leaf shutter and color-corrected lens.

• 1962

  Corporate name changes to Petri Camera Ltd.

  [1]Petri Cameraen.wikipedia.org

  Kuribayashi Shashin Kōgyō adopts Petri Camera Ltd. as its corporate name.

• 1959

  First Penta SLR

  [1]Petri Cameraen.wikipedia.org

  The company introduces the Penta, its first single-lens reflex camera. Domestic models use the Penta name, while export versions are associated with PetriFlex.

• 1907

  Kuribayashi business is founded

  [1]Petri Cameraen.wikipedia.org

  The Japanese optical and camera business that later became Petri Camera is established.

Petri positioned itself as a Japanese camera maker offering mechanically designed rangefinders, SLRs, and compact cameras for domestic and export markets. Its appeal rested on distinctive designs, manual operation, solid construction, and comparatively accessible equipment, although its proprietary lens system and limited lens range made it less competitive against larger manufacturers as camera technology became more electronic.

• Coupled rangefinder camera · 1963

  Petri 7S

  Introduced in 1963, the Petri 7S is a leaf-shuttered coupled rangefinder with the company’s Circle-Eye System. It used a color-corrected lens and became one of Petri’s most recognizable cameras. Its mechanical construction and continued usability have made it a recurring subject among vintage-camera collectors and street-photography enthusiasts.

• Rangefinder camera · 1966

  Petri 7S 11

  The 7S 11 followed the original 7S in 1966 and became a successful Petri rangefinder model. Like other cameras from the period, it emphasized manual photographic control and optical performance rather than electronic automation. It is now primarily encountered in the collector and used-camera market.

• Single-lens reflex camera · 1959

  Penta

  The Penta, introduced in 1959, was Petri’s first SLR family. Early examples used a universal M42 screw mount, while many subsequent models in related Penta, Flex, and FT lines used Petri’s proprietary breech-lock bayonet. Domestic models generally carried the Penta designation.

• Export SLR camera line

  PetriFlex

  PetriFlex was the export-oriented designation associated with the company’s SLR products. The line shared the broader development of the Penta, Flex, and FT families and reflected Petri’s effort to sell Japanese-made cameras outside its home market.

• Single-lens reflex camera · 1974

  Petri FT and FTX series

  The FT-family cameras extended Petri’s SLR range through the company’s transition between proprietary breech-lock and M42 screw mounting. The FTX, introduced in 1974, returned to M42 compatibility, while later inexpensive models continued to emphasize mechanically controlled, low-cost construction.

• Compact camera

  Petri MF10

  The MF10 was the last reported camera model produced by the employee-backed Petri Kōgyō operation. Its screw-mount lens system represented the company’s continued mechanical approach, but it could not compete effectively with cameras using electrical contacts and newer electronic features.

• Optical instruments

  Petri telescopes

  After leaving the camera business, Petri Kōgyō became associated with telescope manufacturing at a plant in Sugito, Saitama Prefecture. This later optical-instrument activity continued the company’s connection with precision optics, although it was separate from the historical camera range.

• 1980

  Sell the Petri brand to Dixons GroupM&A

  Background

  Following the company’s financial difficulties and the continuation of operations under Petri Kōgyō, the trademark was separated from the original camera-manufacturing business.

  Action taken

  The Petri brand was sold to the UK Dixons Group for short-term use as an in-house brand.

  Aftermath

  Petri disappeared from the mainstream camera market during the autofocus transition, while Petri Kōgyō later concentrated on telescope manufacturing.

  Source

• 1977

  File for final bankruptcyOther

  Background

  Petri faced intensified competition, the growing importance of electronic camera systems, and the manufacturing advantages of larger camera companies.

  Action taken

  Kuribayashi filed for final bankruptcy.

  Aftermath

  The labor union continued the operation with employee capital under the Petri Kōgyō K.K. name. Camera production eventually ended, with the MF10 identified as the last model.

  Source

• 1974

  Return to the M42 lens mountGeneration change

  Background

  Many earlier Penta, Flex, and FT cameras had used a proprietary Petri breech-lock bayonet, but the company’s lens selection was limited.

  Action taken

  Petri used the more broadly established M42 screw mount on the FTX and continued the approach on several lower-cost bodies.

  Aftermath

  The change improved compatibility with a common mounting standard, but it did not prevent Petri from losing ground as competitors introduced electronically coupled and autofocus systems.

  Source

• 1962

  Adopt the Petri Camera corporate identityStrategy

  Background

  The company had operated for decades under the Kuribayashi name while using Petri-related branding for cameras and exports.

  Action taken

  It changed its corporate name to Petri Camera Ltd., bringing the company name closer to its established camera brand.

  Aftermath

  The Petri identity became the principal name associated with the company’s cameras and later brand history.

  Source

1. 1Petri Cameraen.wikipedia.org
2. 2Petri 7S and About Kuribayashiphotoethnography.com
3. 3Collectors Guide for Kuribayashi-Petri Cameraspbase.com