The Pen series is a family of medium format cameras manufactured by Olympus from 1959 until the early eighties. Apart from the Pen F series SLR cameras middle frame (discussed in its own article), it comes to cameras fixed lens viewfinder. Original pen was introduced in 1959. Designed by Yoshihisa Maitani, [1] was the first half frame camera produced in Japan. It was one of the smallest cameras using 35mm film in 135 normal cassettes. Its name comes from the idea that the camera was as portable as a pen. The concept was soon copied by many other Japanese manufacturers. Following a series of derivatives, some easier to use with the introduction of automation of exposure, for example, the Pen EE; others with a larger aperture lens and a manual meter, such as Pen D. In 1966 the arrival of the Rollei 35, an almost equally compact camera but with normal exposures of 24 × 36, would announce the beginning of the end of the concept of doup. However, Olympus continued to produce the simplest models of the Pen to the family until 1983. It sold less than 17 million cameras Pen half-frame. In the following descriptions, note that the focal lengths indicated not provide the same angle of view for the cameras full frame: 30 mm in the stylus is equivalent to approximately 45 mm in a full and 28 mm frame 40 mm. The Pen EE-2, manufactured between 1968 and 1977 is almost the same as the Pen EE with the addition of an accessory shoe and an automatic exposure meter. The speed range of the film was changed to reflect modern emulsions. Now ranges from 25-400 ISO. Shutter speeds also changed to 1/200 and 1/40 second (compared to 1/250 and 1/30 in the US). EE-2 could only accommodate larger filters (43.5 mm).
