Before the Pen went on sale in 1959, a junior designer at Olympus was asked how many cameras he expected to sell. Yoshihisa Maitani had a number ready: 1.5 million. By his own account, the room was astonished and laughed. Olympus was then building 200 to 300 cameras a month.
The Olympus Pen is a half-frame camera. It shoots on ordinary 35mm film but exposes two pictures where a full-frame camera exposes one. Maitani designed it a few years after joining the company in 1956, and Olympus says 17 million Pen-series cameras were sold. The question is how a camera that the factory manager refused to build became that.
- Maker: Olympus Optical Co.
- Designer: Yoshihisa Maitani, born 1933, at Olympus from 1956
- Introduced: 1959, with a target price of 6,000 yen, which Olympus describes as about a month's salary
- Format: half-frame on 35mm film, 72 pictures from a 36-exposure roll
- Lens on the original: D.Zuiko 28 mm f/3.5, as engraved on the camera
- Series total: 17 million, according to Olympus
A brief with one number
Maitani came to the company through a patent. As a student in the 1950s he photographed with a Leica IIIf. He also designed a camera of his own, according to Casual Photophile and Digital Camera World. Olympus's head designer, Eiichi Sakurai, saw the patent and insisted the young man join. Maitani later said he had also received a job offer from a car maker and kept quiet about it.
Olympus sent him to the factory first. He rotated through departments every six months for two years, then returned to the design office. Olympus's own history gives his brief as a camera as easy to use and carry as a pen. The price target was 6,000 yen. He built five mock-up models, which surprised his colleagues, according to John Foster's tribute page.
Half-frame, and a lever that cost too much
Half-size cameras did not exist yet. Makers treated the 35mm camera as the main camera and anything smaller as a spare, Maitani said in his lecture at the JCII Camera Museum.
The lens was the one part he would not economize on. Maitani held that the lens is the soul of a camera, according to Casual Photophile. Olympus's own page credits the D.Zuiko lens for the Pen's image quality. Accounts differ on how that lens fit the budget. One profile says it consumed the whole development budget. Another says he insisted on a Tessar-type design and left a colleague to make it cheaply.
Elsewhere he saved ruthlessly. The Pen was meant to carry something of the Leica. A Leica-style film advance lever would have meant replacing about 40 components. The Pen got a single plastic dial that felt much the same and needed one change.
The factory manager said no
The prototype met a wall of doubt. According to Maitani, the factory manager refused to build it, and the sales executives said there was no market for it. When Sakurai saw the prototype, he said: "Let's manufacture it." Because the factory would not build it, production went to an outside subcontractor. The Pen entered production in October 1959, according to John Foster's tribute page.
Here is the detail that gives the story its turn. Once the Pen was selling, the same factory manager asked to make the next model, the Pen S, which sold for 7,000 yen. The camera he had refused was now the one the factory wanted.
One and a half million, said in a room full of laughter
The forecast came from a rough sum. Maitani said statistics showed about 7 million cameras in Japan, counting those lying in drawers. He reasoned that half would be replaced by half-size cameras and that Olympus could capture half of that. The company still did not believe 1.5 million, and settled on 5,000 cameras a month. Demand ran ahead of that too, Casual Photophile reports.
The camera for women
Maitani noticed who was missing. In his lecture he said almost all camera buyers were men, about 98 percent of the market. After watching a mother photograph her son with a Pen, he began designing something simpler, with one button and no difficult controls. The market was not asking for it. "Men like machines. They dream of Harley-Davidsons," he said, according to a transcript of the lecture.
Sales fought him. Staff said it would not be a proper camera, and a conference of branch managers agreed. The head of the sales division argued with Maitani for a full day. Maitani built a prototype overnight, and the next day the executive played with it in silence for about 30 minutes. Then he said: "Maitani, let's do it."
Olympus's lecture does not name the model in that episode. It does say female buyers rose from 2 percent to 33 percent after the Pen EE went on sale. Accounts differ on the details: a Harold Feinstein Archive profile tells the overnight-prototype story without tying it to the EE. Maitani proposed a price of 8,000 yen. Sales wanted 10,000, which he noted was unusual, since sales usually pushed for a lower price than developers. It launched at 10,000 yen and sold in large numbers.
The half that stayed half
Success pulled Maitani toward bigger machines. Olympus notes that professional photographers had already adopted the Pen as a second camera. In 1963 his team produced the Pen F, billed as the first half-frame SLR. It had a titanium rotary shutter with flash sync at every speed, and a mirror that flipped sideways, according to Casual Photophile. In 1966 came the Pen FT, which Olympus calls the world's first half-size TTL SLR.
The format hit limits abroad. Kodak declined to support half-size film mounts because they would cost twice as much, Maitani said, and Agfa agreed to make them instead. John Foster's tribute adds that the Pen series was considered unsuccessful in the United States because half-frame developing services were poor. Serious SLR buyers also wanted full-frame negatives. Olympus turned to a full-size 35mm SLR, which Sakurai approved in December 1967, according to Casual Photophile.
What 1.5 million became
The Pen series ran through the 1960s and 1970s, according to Digital Camera World. Maitani retired in 1996 and died in 2009. Olympus had unveiled the E-P1, a digital camera styled after the original Pen, roughly a month before, according to Amateur Photographer's obituary. The forecast that made a planning meeting laugh was 1.5 million. Olympus counts 17 million Pen-series cameras sold.
Maitani went on to design the OM system and the XA. For another designer story, read Nikon F3: Giugiaro, the red line, and the camera Nikon restarted. For a maker whose lens mount outlived it, read What happened to Minolta.
You can see what is in the 35mm film cameras collection in the shop.
Sources
- Olympus Global Technology Museum, Yoshihisa Maitani special lecture Vol. 1, "the Semi-Olympus I, the Pen Series": olympus-global.com
- Olympus Global Technology Museum, Maitani special lecture Vol. 2, JCII Camera Museum, November 26, 2005: olympus-global.com
- OM Digital Solutions, Olympus Pen product history: om-digitalsolutions.com
- Olympus history booklet, "Olympus Pen (1959)": olympusamerica.biofos.com
- James Tocchio, "Yoshihisa Maitani, The Man Who Made Olympus," Casual Photophile, January 12, 2018: casualphotophile.com
- Digital Camera World, "The 26-year-old who designed a camera that sold over 17 million units": digitalcameraworld.com
- John Foster, tribute to Yoshihisa Maitani, 2004: biofos.powweb.com
- Harold Feinstein Archive, "The Olympus Pen half-frame camera: Keeping it simple!": haroldfeinstein.com
- Amateur Photographer, "Olympus Pen designer bows out aged 76": amateurphotographer.com
- Transcript of Maitani's JCII lecture, copy on eReaderJoy, December 13, 2015: ereaderjoy.blogspot.com
- Photos, checked November 6, 2026: Olympus Pen.jpg, Olympus Pen 6867.jpg (both CC BY-SA 4.0); Olympus Pen EE (type 1).jpg (CC BY-SA 2.0); Olympus Pen F.jpg (CC BY-SA 3.0)
Sources compiled and text drafted with AI assistance. Published by Unseend.