{{Short description, Camera TONE camera was a sophisticated Hit-type camera using 17.5 mm paper backed film, introduced by Toyo Kobi Optical Company in

occupied Japan Japan was occupied and administered by the victorious Allies of World War II from the 1945 surrender of the Empire of Japan at the end of the war until the Treaty of San Francisco took effect in 1952. The occupation, led by the United State ...

in 1948.

Unlike other simple Hit-type cameras with a

fixed-focus lens A photographic lens for which the focus is not adjustable is called a fixed-focus lens or sometimes focus-free. The focus is set at the time of lens design, and remains fixed. It is usually set to the hyperfocal distance, so that the depth of fie ...

and single shutter speed, the TONE camera is a full function subminiature camera with focusing lens, variable aperture and variable shutter speed"The Tone Camera has no competition for a Camera with its features in lens and construction. • All metal precision Camera-genuine leather covered • F3.5 Anastigmat lens-Focusing mount 3 ft. to inf. • Speeds 1/25, 1/50, 1/100 sec. and bulbs ..." ''

Popular Photography ''Popular Photography'', formerly known as ''Popular Photography & Imaging'', also called ''Pop Photo'', is a monthly American consumer website and former magazine that at one time had the largest circulation of any imaging magazine, with an edit ...

,'' ND, September 1949, p. 180

Features

*Both an eye-level

viewfinder In photography, a viewfinder is what the photographer looks through to compose, and, in many cases, to focus the picture. Most viewfinders are separate, and suffer parallax, while the single-lens reflex camera lets the viewfinder use the main ...

and a waist level viewfinder, *Lens: TONE Anastigmat 1:3.5 f=25 mm *Focusing dial: 3 ft, 10 ft, infinity *Close focusing: about 2 feet *Aperture: ƒ/3.5, ƒ/4.5, ƒ/8, ƒ/11 *Shutter: 1/25 s, 1/50 s, 1/100 s, bulb

Film

HIT-type 17.5 mm paper backed

roll film Roll film or rollfilm is any type of spool-wound photographic film protected from white light exposure by a paper backing. The term originated in contrast to sheet film. Confusingly, roll film was originally often referred to as "cartridge" film ...

, with a metal spool, each roll of film can be used to make 10 exposures of 14x14 mm pictures. 17.5 mm film was made from 35 mm film by cutting it in the middle. One box of HIT film contains six rolls of 17.5 mm film wrapped in thin aluminium foil.

Depth of field table

References

Photography in Japan Subminiature cameras