Zenobia Kogaku is a Japanese brand little known in Europe.

Zenobiaflex FII is Zenobiaflex II twin. Only the lens and shutter name change: Daiichi-Opt. becomes Zenobia-Opt. and Daiichi-Rapid becomes Zenobia-Rapid. The DOC logo (for Daiichi-Optical-Company) engraved on the upper part of the cap protecting the optics is replaced by a Z. These modifications are the consequence of the company name switch in 1956: Daiichi Kogaku has changed to Zenobia Kogaku.

Viewing lens of Zenobiaflex FII has f/3.2 max aperture and has 701906 serial number. Taking lens has 702265 serial number and the camera has 301177.

This camera is sturdy, handy, moderately heavy and well manufactured.

The history of the Zenobia brand begins around 1936.

At that time, the company Okada Kogaku created a 3 x 4 camera called the Walz, followed in 1940 by the Waltax and the Okako (short for Okada Kogaku). The company survived the war and started producing miniature cameras: the Kolt (17.5 mm), the Gemmy (16 mm), and, upon the request of the U.S. Army, the A and B cameras (16 mm).

In 1951, Okada Kogaku changed its name to Daiichi Kogaku. The Waltax camera was renamed Zenobia in 1952. It wasn't until 1953 that the first 6 x 6 TLR (Twin Lens Reflex) camera, called the Zenobiaflex I, was introduced. It featured a 75 mm Daiichi-Optical Neo-Hesper lens and a Daiichi-Rapid shutter. The Zenobiaflex II was introduced in 1954 with a Neo-Hesper 77.5 mm lens. In the same year, the Ichicon 35 camera was released.

Due to difficulties, the company changed its name once again in 1956, adopting the name of its camera, Zenobia Kogaku. It was during this time that the Zenobiaflex FII camera was introduced. In 1957, the Zenobia 35 camera entered the market. An announced Zenobiaflex Automat in 1957 might have been presented in 1958 but was not commercialized, as the company permanently closed its doors that same year.