This photo of my photoalbum was taken in Tokyo.

Tri-X is a classic high-speed black and white photographic film from Kodak. Introduced in 1954 at a rated speed of ASA 200/24° DIN, it was the first high-speed black and white film. Today it is available in two speeds, ISO 320/26° (320TXP) and 400/27° (400TX). Tri-X 400 is the more common of the two, coming in 24 and 36 exposure rolls of 35 mm and 120 as well as 50 and 100ft bulk rolls of 35mm. Tri-X 320 is available in 120 and 220, as well as 4×5", 5×7", and 8×10" sheets. Tri-X 400 is rated at ISO 400 when processed in standard developers and remains among the fastest black and white films today. Push processing Tri-X to EI 800 in a standard developer brings very good results, while further pushing to EI 1600 requires more sophisticated processing. Tri-x was once one of the most popular films used by photojournalists, but it declined in the 70's and 80's due to the falling price and increasing popularity of colour film. Since the advent of digital photography it has all but fallen out of use in newspaper journalism. Apart from possible use in educational establishments, it still remains reasonably popular in documentary journalism.

Tokyo Kogaku produced cameras, beginning with a 6×4.5 cm medium format model in 1937. A 127 film camera followed the next year. After the war, the Primoflex I twin-lens reflex camera came out in 1951. The Topcon 35A was born in 1953. In 1960, the company produced a 6x9 press camera on order from the Tokyo Metropolitan Police Department. It initially used a Mamiya lens; civilian models became available with Topcon lenses. With the 35 mm Topcon RE Super of 1963, the company pioneered full-aperture metering. Tokyo Kogaku continued to innovate until leaving that line of business in 1981. About 1965 the US Navy tested cameras from several Japanese and German manufacturers (including Nikon's F). The Topcon Super D was the winner of this competition and served in the Navy until the very end of Topcon production in 1977. In 2003, Cosina released a photographic lens bearing the Topcon brand.